The relative lengths of the frog and mouse branches in the phylogenetic tree in Figure 26.13 indicate that ]a. frogs evolved before mice. b. mice evolved before frogs. c. the homolog has evolved more rapidly in mice. d. the homolog has evolved more slowly in mice.
Answers
The phylogenetic tree expresses the relationship between different taxa and how different homolog groups evolved. The correct option is c). the homolog has evolved more rapidly in mice.
What is a phylogenetic tree?
Phylogenetic trees are graphic representations that express the evolutive process through which several groups -taxa- emerged through history.
The phylogenetic tree is composed of
Root ⇒ It represents the oldest common ancestorNodes ⇒ Divergence point in which single taxa differentiate or diverge. These nodes are the most recent common ancestor of the new diverging groups.Branches ⇒ The extremes of branches represent taxonomic groups or lineages.All the taxa in the tree share a far common ancestor. New traits emerge through history that drives the evolution of new lineages. These traits might be either morphological or molecular.
Two taxonomic groups are more related if they have a recent common ancestor. There are fewer differences (morphological or molecular) between these two groups.
On the other hand, two lineages will be less related if their common ancestor is not a recent one and is located far away in the tree. Several differences exist between these groups because many changes occurred in the middle.
Two groups are homologous when they have a common recent ancestor, even when one of the groups evolved into new groups later in time.
In the exposed example, the frog is homologous to the group composed of chicken, human, and mouse. They share a common ancestor.
The homolog evolved into different new groups, while frogs remain the same.
The correct option is c). the homolog has evolved more rapidly in mice.
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Related Questions
All 20 amino acids are needed to make animal proteins. Why aren't they all essential to animal diets?
Answers
Answer:
To help the animals body convert food into energy and things it needs, a animal would look weird without some amino acids (they might even be dead)
Explanation:
suppose that, from measurements in a microscope, you determine that a certain bacterium covers an area of 1.50μm2 . convert this to square meters.
Answers
By unit conversion, the bacterium covers an area of 1.50 x 10¯¹² m².
We need to know about unit conversion to solve this problem. The unit conversion can be used to convert a unit to another unit. It can be defined as
a = xb
where a is unit a, b is unit b and x is the constant of conversion.
From the question above, we know that
A = 1.50 μm²
Convert the unit conversion to m²
1 μm² = (10¯⁶)² m²
1 μm² = 10¯¹² m²
Convert the area of bacterium
A = 1.50 μm²
A = 1.50 x 10¯¹² m²
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which of the following prenatal blood or laboratory tests helps determine immunity to german measles?
Answers
The prenatal blood or laboratory test that helps to determine immunity to German measles is Rubella titer.
German measles is also known by the name Rubella. It is a disease caused by a virus and is contagious. The transmission of the disease can be via contact with an infected person or inhaling the virus containing droplets. The general symptoms of the disease are: fever. runny nose, headache, cough, sore joints, etc.
Rubella titer is a diagnostic test that tests for the presence and the amount of the antibodies formed in the body against Rubella virus. If the test is positive that depicts that the person is immune to the disease and a negative result indicates that the amount of Rubella virus antibodies are less and the person can become infected.
The question is incomplete, the complete question is:
Which of the following prenatal blood or laboratory tests helps determine immunity to German measles?
Hematocrit and hemoglobinBlood type and RhRubella titerSyphilis, hep B, and HIVPap testTo know more about German measles, here
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neurotransmitters bind to , which are protein structures on the surface of the neuron cell membrane. a. neural receptors b. cell bodies
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neurotransmitters bind to protein structures on the surface of the neuron cell membrane called as neural receptors
A. neural receptors.
neurotransmitters are the chemicals that are secreted by the pre-synaptic cell into the synapses of the two neurons which binds with the post-synaptic cell to transmit the action potential into the cell.
The various that are used as neurotransmitter are acetylcholine, histamine, serotonin, dopamine, etc.
the neurotransmitters are synthesized and stored in the vessels of pre-synaptic neuron. When an action potential arrives, the vessel merge with the membrane and releases the neurotransmitters.
They bind with the neural receptors of the other cell to generate action potential.
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You see smoke coming out of the computer which safety equipment is best to use
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Whereas the highly condensed rod-like structures that form from these strands during cell division are called?
Answers
The strands of DNA within the nucleus are called chromatin whereas the highly condensed rod-like structures that form from these strands during cell division are called chromosomes.
What are chromosomes?Chromosomes are structures found in the nucleus of eukaryotic cells, which are made up of long DNA fragments. It will contain the genes of the being that they compose. These chromosomes will also have proteins (histones) attached to them that help them exist in their proper conformation.
In cell division processes, such as mitosis and meiosis, the chromosomes will be well compacted and aligned for their division and duplication processes. Each chromosome has a characteristic shape and size, in its center it will have a condensed area called the centromere that will help classify the chromosomes since it gives each of them a particular appearance.
Therefore, we can confirm that the strands of DNA within the nucleus are called chromatin whereas the highly condensed rod-like structures that form from these strands during cell division are called chromosomes.
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True or false life changes whether they are positive ir negative can cause stress
Answers
Answer: True.
Explanation:
It is true that life changes, whether they are positive or negative, can cause stress, so this statement is a true statement. It is more commonly known for negative things to cause stress, but positive things can cause stress too. This type of stress is sometimes known as eustress. Examples of eustress, or "positive" life changes causing stress, can include attending large events, dates, waiting for something exciting, etc.
Suppose you placed an isolated neuron in a solution similar to extracellular fluid and later transferred the neuron to a solution lacking any sodium ions. What change would you expect in the resting potential?
Answers
The change that would you expect in the resting potential is as follows:
The opening of sodium ion channels is very less, so the resting potential either would not be altered or would become slightly more negative and reveals the outcome of hyperpolarization. What is Resting potential?Resting potential may be defined as the electrical potential of a neuron or other mercurial cell comparative to its surroundings when not stimulated or taking part in the passage of an impulse.
When an isolated neuron is transferred to a solution that lacks any sodium ions, it will definitely prevent the passage of such ions because of the not opening of specific channels. Due to this, the resting potential either remains the same or becomes slightly negative.
Therefore, the change that would you expect in the resting potential is well described above.
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can you pick out the mossy leaf-tailed gecko lying against the tree trunk in this photo? discuss how the gecko’s appearance might benefit its survival. given what you learned about evolution, natural selection, and genetic information in this chapter, describe how the gecko’s coloration might have evolved.
Answers
Leaf-tailed geckos have long, flattened bodies with triangular heads and broad leaf-like tails. The giant leaf-tail gecko, or common flat-tail gecko, is one of the larger species. They have large marbled eyes with red concentric stripes around the pupil on a silver, brown, or gold background. These lizards have mottling that varies in color from tan and green to gray and tan depending on the species.
They also have the ability to camouflage themselves not only with the shape and vegetation of the forest in which they live, but also with the colors of their surroundings. The fringe lobes of the mandible and the sides of the body are flattened against the surface and delineated. The increased surface area reflects and refracts light, breaking the line between the perimeter of the body and the surface below. These adaptations allow leaf-tailed geckos to be almost completely camouflaged from dry leaves and tree bark. The giant leaftail gecko lives in moist, intact forests in the lowlands at an altitude of 800 meters (about 2,625 feet). During the day, branches, logs and fallen leaves provide areas of camouflage for geckos to roost away from the sight of predators. increase. They also inhabit the rainforests of Madagascar's east coast, but there are no confirmed reports of the species living further south than the mainland town of Vondrozzo.
Thus, leaf-tailed geckos have long, flattened bodies, triangular heads, and wide, leaf-like tails.
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Your sensory pathways for smell will accommodate and adapt to the smell within how many minutes?
Answers
within 1-2 minutes sensory pathways for smell will accommodate and adapt to the smell.
Smell/Olfaction is a Chemical sense.It arises from interaction of molecules with smell receptors. it has present 10 million to 100 million receptors.Olfactory receptor cells has FIRST ORDER neurons of the olfactory pathway and each one is a bipolar neuron with an exposed knob shaped dendrite and axon coming out through the cribriform plate and ending in the olfactory bulb.Olfactory hairs is a Part of olfactory receptor cells that respond to inhaled chemicals. within it the Cilia that projects from the dentrite. (transduction is the convert of stimulus energy into a graded potential in a sensory receptor).To know more about sensory pathways visit : https://brainly.com/question/25585487
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which of these statements about bile is true? its main function is the denaturation of proteins. it is synthesized in the gallbladder. it is stored in the liver. its main function is emulsification of fats.
Answers
The statement about bile which is true is its main function is emulsification of fats and is denoted as option D.
What is Bile?This refers to a type of digestive fluid which has a dark green color which is synthesized in the liver and then stored in the gall bladder which releases it when it is needed during digestion.
This fluid is used in the emulsification of fats and it converts it into fatty acids so as to enable an easy absorption by the guts in the part of the digestive tract which is referred to as small intestine.
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What role does the zone of polarizing activity (ZPA) play in limb pattern formation in vertebrates?
Answers
The zone of polarized activity (ZPA) is a region of mesenchyme that contains signals that direct the formation of developing limb buds along the anterior/posterior axis.
The limb bud is an undifferentiated mesenchyme surrounded by an ectodermal sheath. Eventually, limb buds develop into bones, tendons, muscles, and joints. Limb bud development depends not only on the ZPA, but also on many different genes, signals and a unique region of the ectoderm called the apical ectodermal crest (AER). A 1948 study by Saunders and Gasseling confirmed its involvement in AER and subsequent proximal-distal growth. Twenty years later, the same group conducted a chicken limb transplant study and identified ZPA.
It was in 1993 that Todt and Fallon showed that AER and ZPA were interdependent.
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Higher we do in
the mountains, what is the greater the atmospheric pressure,resulting in an increase in available oxygen
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In what ways are disturbances important for savanna ecosystems and the plants in them?
Answers
Answer:
Some large scale disturbances, such as drought, grass fires and grazing are considered to be driving forces in savanna ecosystems. These factors are also hypothesized to allow for a long-term coexistence of trees and grasses which is one of the distinguishing features of savanna ecosystems.
Explanation:
The researchers found that the Neanderthal fossil had approximately 0.0078 as much ¹⁴C as found originally in the atmosphere.
(c) Approximately when did Neanderthals become extinct according to this study?
Answers
The researchers found that the Neanderthal fossil had approximately 0.0078 as much ¹⁴C as found originally in the atmosphere.
The researchers cite evidence that modern humans (H. sapiens) became established in the same region as the last Neanderthals approximately 39,000 - 42,000 years ago.
Approximately when did Neanderthals become extinct according to this study?
Neanderthals co-existed with modern humans for long periods of time before eventually becoming extinct about 28,000 years ago.
What does the name neanderthal mean?
Homo is a Latin word meaning "man" or "man". The word neanderthalensis is based on the place where the first large specimen was discovered in 1856 - Neander Valley in Germany. The German word for the valley is "Tal", although in the 1800s it was spelled "Thal". Homo neanderthalensis therefore means 'Neander Valley Man'.
Some people refer to the species as Neanderthal (without the 'h') to reflect the modern German spelling rather than the original spelling, Neanderthal, used to define the species.
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Mindy increases the temperature of gas in an expandable container. If she keeps the pressure constant, what will happen to the volume of gas?
A: the volume will increase.
B: the volume will decrease, then increase.
C: the volume will decrease.
D:the volume will remain the same.
Please answer it’s urgent, thanks!! (This is science btw)
Answers
Answer:
D
Explanation:
I think I'm not that sure. Constant scientifically means its consistent and stay the same.
Why is it difficult for people in developed countries to know where their food comes from?
Answers
It is difficult for people in developed countries to know where food comes from because they have an unlimited supply of food from various places coming.
In developed countries, people usually live in bigger cities that do not have much of agricultural or farming land. The farms are located far beyond the cities and food is transported to the developed markets via different transportation sources. Many of the food items are also imported from various other countries. Hence, a person buying food from such big markets with such a huge variety has little knowledge of where the food comes from.
On the other hand, in developing countries, there are agricultural lands or farms nearby towns. People make a living through food cultivated from this land. Also, there is not much diversity in food in the local markets. Hence, in developing countries, people usually have an idea of where the food is coming from.
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the energy stored in atp comes from which of the following? the energy stored in atp comes from which of the following? adenosine triphosphate kinetic energy food molecules heat
Answers
The energy stored in ATP molecules comes from food molecules (option C).
What is digestion?Digestion is the process, which occurs in the gastrointestinal tract, to break down food into simpler substances that can be utilized by the body.
Digestion results in the release of chemical energy that was initially stored in the bonds of food molecules.
This energy becomes stored in the bonds of the phosphate group of a molecule called adenosine triphosphate (ATP).
Therefore, it can be said that the energy stored in ATP molecules comes from food molecules.
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what doesn’t kill us: how freezing water, extreme altitude and environmental conditioning will renew our lost evolutionary strength. by scott carney, (2017).
Answers
The New York Times bestseller "What Doesn't Kill Us" recounts the origins of human evolution to a time when our ability to adapt to our surroundings was crucial to our existence.
Without even a hint of what anyone today may consider contemporary technology, our forefathers traversed deserts, mountains, and oceans. Now that we live in a time where luxury is taken for granted, those feats of endurance seem unimaginable. But what if recreating our ancestors' environmental circumstances will help us restore some of our lost evolutionary strength?Scott Carney, an anthropologist and investigative journalist, sets out to answer the question of whether it's possible to manipulate our bodies and our environment in order to influence our inner biology. Wim Hof, a fitness expert from the Netherlands whose capacity to regulate his body temperature in extremely cold conditions has generated a flurry of scientific research, is assisting him in his quest for the solutions.A world-renowned surfer, the creators of the obstacle course race movement, an Army scientist, and regular folks who have documented their success in curing autoimmune disorders, losing weight, and reversing diabetes are among the other experts Carney consults with. As he pushes his body and mind to the limit, he documents his own transformational journey. His search ends in a record-breaking, 28-hour trek to the snowy peak of Mt. Kilimanjaro while wearing nothing but a pair of running shorts and sneakers.What Doesn't Kill Us explores the true relationship between the mind and body and reveals the science that enables us to push past our imagined boundaries. It is an ambitious blend of investigative reporting and interactive journalism.To learn more about environmental adaption visit:
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Are the organelles that digest and dispose of worn-out mitochondria and other organelles by a process called autophagy.
Answers
Lysosomes are the organelles that digest and dispose of worn-out mitochondria and other organelles by a process called autophagy.
We can describe lysosomes as membrane-bound organelles that have digestive enzymes present in them. It is due to these digestive enzymes, that the lysosomes are actively involved in the digestion of worn-out organelles.
Autophagy is the process by which a cell has the potential to digest and dispose of its own damaged parts. The cells of the body are recycled through the process of autophagy.
The process of self-digestion i.e autophagy occurs in the lysosomes of a eukaryotic cell.
Various types of hydrolytic enzymes are present in the lysosomes so that any type of organelles can be digested in the lysosomes.
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A tissue is viewed using a microscope. the presence of tightly packed cells with a free surface and a basement membrane allows this tissue to be quickly identified as ____________.
Answers
A microscope is used to examine the tissue. This tissue is easily recognized as epithelial tissue because it contains densely packed cells with something like a free surface and just a basement membrane.
What does epithelial tissue do, and why?There are numbers of epithelial tissues in the human body. They make up the majority of the tissue in glands, line body cavities as well as hollow organs, and cover all of the body's surfaces. Protection, secretion, absorption, excretion, filtration, diffusion, as well as sensory reception, are just a few of the many tasks they carry out.
What components make up epithelial tissue?These proteins, which are primarily formed of claudins and occluding, are placed in a row close to the same apical surface of the epithelial cells. The basement membrane is the support for epithelial tissue. This same basal lamina and even the connective tissue beneath it make up its two components.
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Assume that a drop in parasite abundance reflects an effective immune response by the host. Formulate a hypothesis to explain the pattern you described in question 2.
Answers
The parasite changed to a new surface glycoprotein after the host's immune response to the first one was successful. This explains why parasite counts change in cycles throughout time.
Describe glycoprotein:A substance that combines a protein with a carbohydrate. In the body, glycoproteins have vital roles. For instance, practically all of the important components in the immune system's immunological response are glycoproteins.
How are glycoproteins produced?In the Golgi apparatus, serine or threonine residues in polypeptides are often modified by the addition of sugar residues to the hydroxyl side chains. O-linked glycoproteins, in contrast to N-linked glycoproteins, are created by the sequential addition of one sugar residue.
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What organism is always found at the base of the blue chain?
Answers
But the Sun is usually at the bottom, the energy is taken by plant life.
Then plant life usually is next to the sun at the bottom, along with anything that synthasis' the sun's energy.
If four different vntr alleles have frequencies of 1 in 10, 1 in 20, 1 in 50, and 1 in 500 in a population of 250 million, how many people would have all four alleles?.
Answers
Answer:
50
Explanation:
There are 50 persons in the population that have this pattern, with an occurrence frequency for the 4 alleles of 1 in (10x20x50x500) = 1 in 5,000,000.
Variable numbers tandem repeats, called VNTRs, are the repetitive sections of the DNA strand. The fundamental benefit of STR fingerprinting over VNTR fingerprinting is that it just needs a tiny quantity of pure DNA and a short DNA sequence to carry out its activities. The main purpose of STR fingerprinting is to precisely identify a given individual's genes fingerprint. Moreover, the variable number of tandem repeats (VNTR), are brief sequences (between 20 and 100 bp) whose repetition numbers vary at particular loci in the genome among several animals, notably humans. VNTR sequences differ in length across individuals within the same species or group, hence they are frequently employed as molecular identifiers to identify people, map QTLs (quantitative trait loci), establish evolutionary connections between people/cultivars/lines, etc.
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When toxins from inhalants stay in the body for a long time, they are stored in _____________
Answers
When toxins from inhalants stay in the body for a long time, they are stored in 38%
What occurs if you accidentally inhale butane?
Following inhalation, this highly lipophilic volatiles quickly pass into the blood via the lungs and attain high concentrations in lipid-rich organs such as brain and liver. Butane may cause direct toxicity in the brain and the myocardium while propane may generate an anesthetic impact on the central nervous system.
What happens if you accidentally inhaled lighter fluid?
Besides sudden gasping death, huffing can also lead to death via asphyxiation, where the inhaled stinks take up the space in lungs, leaving no room for oxygen, suffocation from breathing in an enclosed area, seizures, comas or seizures due to irregular activity in the brain, and stopping from inhaling vomit.
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If these organisms were arranged in an energy pyramid, which organism would have the LEAST amount of total energy available?
Answers
Answer:
Picture
Explanation:
Picture?
Cellular swelling is likely to occur when blood cells are immersed in? more concentrated solutions. isotonic solutions. hypotonic solutions. hypertonic solutions.
Answers
Cellular swelling is likely to occur when blood cells are immersed in: Hypotonic solutions.
Which type of solution will force cells to swell?
hypotonic solution
A cell placed in solution projects up. The solution is hypotonic. In the hypotonic solution, the cell will acquire water by osmosis and will swell up
What does hypertonic answer do?
Hypertonic solutions are ones that have a higher solute attention than that of the cell. Hypertonic solutions drive cells to shrivel and shrink in size, which can cause problems and hinder proper cell functioning.
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What is most likely to increase rates of gene flow for a marine organism that is benthic (bottom dwelling) as an adult and planktonic (in the water column) as a larva?
Answers
The most likely increased rate of gene flow for a marine organism that is benthic as an adult and planktonic as a larva is an Increased lifespan of planktonic larvae.
In people, gene flow go with the flow typically comes about thru the actual migration of human populations, each voluntary or forced. no matter the fact that gene drift does now not change allele frequencies for a species as an entire it can adjust allele frequencies in nearby populations.
High gene drift in a pathogen will boom the size of the populace and of the geographical location wherein its genetic cloth occurs. consequently, pathogens that show an immoderate degree of gene glide normally have more genetic diversity than pathogens that show a low degree of gene glide. Gene drift is the motion of genes into or out of a population. Such motion can be due to the migration of private organisms that reproduce in their new populations, or to the motion of gametes.
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disruption of the saccharomyces cerevisiae homologue to the murine fatty acid transport protein impairs uptake and growth on long-chain fatty acids
Answers
The yeast Saccharomyces cerevisiae is in a position to make use of exogenous fatty acids for lots of cell procedures consisting of beta-oxidation, phospholipid biosynthesis, and protein modification. The molecular mechanisms that govern the uptake of those compounds in S. cerevisiae have now no longer been defined.
We record the characterization of FAT1, a gene that encodes a putative membrane-certain long-chain fatty acid shipping protein (Fat1p). Fat1p carries 623 amino acid residues which might be 33% equal and 54% with comparable chemical residences in comparison with the fatty acid shipping protein FATP defined in 3T3-L1 adipocytes (Schaffer and Lodish (1994) Cell 79, 427-436), suggesting a comparable function. Disruption of FAT1 outcomes in 1) an impaired increase in YPD medium containing 25 microM cerulenin and 500 microM fatty acid (myristate (C14:0), palmitate (C16:0), or oleate (C18:1)); 2) .
A marked lower withinside the uptake of the fluorescent long-chain fatty acid analogue boron dipyrromethene difluoride dodecanoic acid (BODIPY-3823); 3) a discounted fee of exogenous oleate incorporation into phospholipids; and 4) a 2-3-fold lower withinside the prices of oleate uptake. These information assist the speculation that Fat1p is concerned in long-chain fatty acid uptake and can constitute a long-chain fatty acid shipping protein.
Question is incomplete. The complete questrion is -
what was the disruption of the saccharomyces cerevisiae homologue to the murine fatty acid transport protein impairs uptake and growth on long-chain fatty acids?
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What statement is correct about the polarity of a water molecule?
A) Both oxygen and hydrogen ends have partial negative charges.
B) Both oxygen and hydrogen ends have partial positive charges.
C) The oxygen side has a partial negative charge and the hydrogen ends have partial positive charges.
D) The oxygen side has a partial positive charge and the hydrogen ends have partial negative charges.
Answers
Answer:
C) The oxygen side has a partial negative charge and the hydrogen ends have partial positive charges.