Answers
Answer:
65,000
Explanation:
Black (B) is dominant to chestnut (b)
Trotting (T) is dominant to pacing (t)
A heterozygous black and h0m0zygous pacer (Bbtt) is crossed with a chestnut and heterozygous trotting (bbTt)
Bbtt x bbTt is the cross.
Potential alleles - Bt and bt bT and bt
Punnett square attached
Possible genotypes are: BbTt, bbTt , Bbtt, bbtt
Black pacers have the genotype BBtt or Bbtt
1:4 of the offspring have The Bbtt genotype.
If there are 260,000 in the population, then 260,000 / 4 would be black pacers.
260,000/4 = 65,000
Related Questions
WILL MARK BRAINLIEST!
1. Which factor does not affect species richness on islands?
Age of island
Geographical location
Habitat size
Island shape
Question 2
Which combination of factors will result in an island community with the lowest ecological tolerance?
Upwelling of colder ocean water, increased sunlight
Introduction of invasive species, increased freshwater sources
Increased human population, increased agricultural expansion
Increased colonization, decreased extinction rate
Question 3
The table depicts characteristics of five amphibian species (A–E). Use the information in the table to answer the following question:
Ecological Parameter Species A Species B Species C Species D Species E
Temperature Range 15–30 °C 10–40 °C 15–20 °C 10–30 °C 15–25 °C
Freshwater or Brackish Water Fresh/brackish Brackish Brackish Fresh Fresh/brackish
Food Sources Varied Two mainland species of grasshopper Only island arthropods Varied Varied
Habitat Lakes Estuaries/ponds Estuaries/ponds Lakes Lakes
Which individual(s) of the species listed in the table would likely die if moved to a new island habitat?
Species C and E
Species A and C
Species A only
Species B only
Question 4
Island biogeography studies the ________ on islands.
mountain topography
natural disasters
distribution of species
climate change
Question 5
Increased deforestation reduces the habitat for an arthropod species preferred by an island reptile. Which of the following descriptions predicts the most likely outcome for these two species?
The reptile population increases as arthropods are confined to smaller sections of the island.
The reptile population decreases as arthropods decrease with their habitat.
Island arthropods decrease as the reptile population increases.
Island arthropods and reptiles both increase in the island habitat.
Question 6
Which statement describes a factor in the island biogeographical model?
Dispersing species are more likely to find smaller secluded habitats
Smaller populations are less likely to go extinct
Large islands have less available niches for immigrating species
Islands closer to the mainland have greater colonization
Question 7
Which of the following ideas helps explain the factors that affect island colonization of and species richness for a region?
Species-area effect
Rescue effect
Target effect
Time/stability hypothesis
I and II
II and III
I, II, IV
I, II, III, IV
Answers
Answer:
Ecological tolerance refers to the ability of an organism, or animal to be able to adapt and survive changing environmental conditions.
The combination of factors that would result in an island community with the lowest ecological tolerance would be option B Introduction of invasive species, increased deforestation because with the introduction of invasive species, there would be more competition for natural resources such as food, water, sunlight; and with increased deforestation, there is greater chances of soil erosion.
interact with other living organisms and
interact with the physical environment
Insular biogeography or island biogeography is a field within biogeography that examines the factors that affect the species richness and diversification of isolated natural communities. The theory was originally developed to explain the pattern of the species–area relationship occurring in oceanic islands.
The reptile population decreases as arthropods decrease with their habitat
Migrating species are more likely to find larger habitats over smaller ones. Explanation: The concept of island biogeographical model establishes that larger islands and habitats will have a larger number of species than a smaller island. Larger islands have more tendency to attract new species.The species–area relation, whereby the number of species in a spatial unit increases with that unit’s area, well predates the MacArthur and Wilson theory of island biogeography, having been documented for about 150 years. Two general kinds of models for this relation have been proposed. The first has number of species predicted from an assumed species–abundance distribution and the total number of individuals of all species combined (assumed proportional to area). The second develops species–area relations from MacArthur and Wilson’s species-equilibrium approach.
ANSWER ASAP- Which organelles are involved in the production of proteins? Select two options.
endoplasmic reticulum
mitochondrion
ribosome
lysosome
cell membrane
Answers
Answer:
Endoplasmic reticulum, and ribsome
Both of them are in the production of proteins
Rough endoplasmic reticulum is a membrane-bound organelle that uses ribosomes on the membrane surface to carry out its function of producing proteins. Thus, option A,C is correct.
What is the role of endoplasmic reticulum and ribosome?Generally speaking, the endoplasmic reticulum's function is to produce proteins that allow the rest of the cell to function. It can be smooth or rough.
These proteins are made by tiny, circular, elongated organelles called ribosomes, which are located on the rough endoplasmic reticulum.
On the rough ER, proteins are made. The ER receives those that have been processed translationally.
A signal peptide at the N terminus, which is recognized by a particular receptor (docking protein) on the ER membrane, is necessary for this insertion.
Therefore, both endoplasmic reticulum and ribosome are involved in the protein formation.
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Which of tWhich of these is a compound?
O
CO2
O2
Cohese is a compound
Answers
PLEASE HELP
Match each statement to being true for Mitosis Only, Meiosis Only or both.
Question 1 options:
Final cells are haploid
Produces cells that are genetically IDENTICAL
Produces cells that are genetically DIFFERENT
DNA is copied first
1.
Mitosis
2.
Meiosis
3.
Both
Answers
Answer:
Given in explaination
Explanation:
mitosis- produces cells that are genetically identical
meiosis- final cells haploid
produces cells that are genetically different
both- DNA is copied first
Mitosis and meiosis share some different feature but both are having a condition to replicate DNA, hence final cells are haploid in meiosis, DNA is copied first in both mitosis and meiosis and produce genetically identical cells.
What is the difference between Mitosis and Meiosis?Mitosis and meiosis are the two separate stages of cell division. When people are talking about cell division, they usually mean mitosis, which is the process by which new cells are again in the body.
The cell division system known as meiosis is what generates egg and sperm cells. A long almost for life is mitosis, for somatic cells and the asexual reproduction of unicellular eukaryotic cells, mitosis is a kind of cell division.
The type of cell division called meiosis is utilized to produce gametes during sexual reproduction. Meiosis is still only found in the germ cells of multicellular plants and animals, where it is essential for sexual reproduction.
Therefore mitosis and meiosis copy DNA first and produce genetically identical cells but in meiosis final cells are haploid.
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6. How might dams on a river
affect the amount of sand on
a beach?
Answers
Answer:
In addition to storing water, the reservoirs behind each of these 500 barriers also trap sand that used to be carried to the shoreline. Dams now withhold sediment from about 16,000 square miles of the state's coastal watersheds and have reduced the flow of sand by 25%, or about 3.6 million cubic yards each year.
Explanation:
What makes up the "tail" of an ATP molecule?
Answers
Answer:
The tail of an ATP molecule is made up by 3 phosphate groups link together by the help of 2 high energy phosphoanhydride bonds. Explanation: ATP or adenosine triphosphate is an energy rich compound that contain adenine base, ribose sugar and 3 phosphate groups.
Explanation:
IF RIGHT BRANLIST PLEASE
Answer:
The tail of an ATP molecule is made up by 3 phosphate groups link together by the help of 2 high energy phospho anhydride bonds.
A rock rolls down a hill. Which form of energy is this an example of?
Chemical
Electrical
Mechanical
Thermal
Answers
Answer:mechanical
Explanation:
what type of igneous rocks are the Hawaiian islands
Answers
The Hawaiian Islands are nearly entirely made of basalt lava, the most abundant type of rock on the planet.
What is igneous rock and its type ?Hot, molten rock crystallizes and hardens to produce igneous rocks, which are named after the Latin word for fire. The melt begins deep inside the Earth around hot regions or active plate borders, then it rises toward the surface. Depending on where the molten rock hardens, igneous rocks are classified as either intrusive or extrusive.
Intrusive Igneous Rocks: When magma is imprisoned in the Earth's interior, intrusive, or plutonic, igneous rocks are created. The individual mineral grains have a very long time to develop because of the slow cooling, and as a result, they reach a comparatively enormous size. Rocks that are intrusive have a coarse-grained texture.Extrusive Igneous Rocks: When magma escapes and cools above (or very close to) the Earth's surface, igneous rock known as extrusive rock is created. These are the kinds of rocks that are created by erupting volcanoes and gushing cracks.
These rocks have an extremely fine-grained or even glassy structure because of the rapid cooling, which leaves little time for mineral crystals to develop. The quenched lava frequently contains trapped hot gas bubbles, giving it a frothy, vesicular texture.
Thus, Hawaiian islands are made up of basalt ; the most common rock on the earth.
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Write two differences between the unicellular and multicellular organisms.
Answers
Answer:
unicellular organisms only have 1 cell.these are simple lifeforms. all functions of a living organism takes place within that one cell, because of this it has no ducts or tubes, it has no organs and thus has no organ system (eg:-circulatory system)
Example of unicellular organisms :- amoeba
Multicellular organisms are made up of more than one cell. these are complex organisms. there are exchange of nutrients and gases among different cells by different processes. they have organs and organ systems.
Example of multicellular organism :- Cat
Explanation:
hope this helps.
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i would love brainliest....
The theory of natural selection is based upon which of the following?
Group of answer choices
rock layers
fossil evidence and observed living organisms
distribution of organisms throughout the world
breeding organisms with favorable traits
Answers
Answer:
Breeding organisms with favorable traits.
Explanation:
Natural selection is all about how an animal's traits help them survive where they live.
Think and discuss:Suppose you are a farmer trying to grow plants in a greenhouse. Why would it be important to know what the limiting factor is
Answers
Answer:
Because limiting factors affect plant growth
Explanation:
A limiting factor is a condition that limits the population's growth in an ecosystem by slowing or stopping its growth. These factors are generated by the lack or excess of a particular resource. In plants, limiting factors include, among others, light, water, temperature, oxygen, food, (i.e., nutrients and minerals), space, etc. In this case, the farmer must know which greenhouse conditions are limiting factors in order to ensure the survival and optimal development of the plant population.
Where are the Galápagos Islands located?
Answers
Answer:
Pacific Ocean
The Galapagos Islands are located 1000 km off Ecuador's coast in the Pacific Ocean. The Galapagos archipelago consists of 13 major islands, 6 smaller islands and many islets.
Explanation:
in terms of nutrition,discuss the statement "you are what you eat"
Answers
Explanation:
this statement means what you eat describes you, it will makes you look nice or healthy or otherwise
what does nucleic acids have in common with carbohydrates and proteins
Answers
Answer:
proteins, nucleic acids ,and carbohydrates can form from all elements
Explanation:
Answer:
Carbohydrates have carbon, hydrogen, and oxygen in their structures.Proteins have amino and carboxyl groups in their structures.
The nucleic acids have phosphate, sugar residue, and a nitrogenous base in their structures. It suggests that all these molecules are grouped on the basis of some common groups.can the brain repair itself
Answers
Answer:
Yes
Explanation:
After a traumatic brain injury, it sometimes happens that the brain can repair itself, building new brain cells to replace damaged ones. But the repair doesn't happen quickly enough to allow recovery from degenerative conditions like motor neuron disease
Analyzing Erosion Scenarios In which Colorado Rockies scenario was there more erosion? Why was there more erosion in the scenario? Write a few sentences
Answers
Answer:
There was more erosion in the Colorado Rockies scenario where there was steady rain compared to the scenario in the same area where there was only a drizzle. There is more erosion because the steady rain increased the volume of the river more than the drizzle did. Because there was more water added to the river, the river flowed faster. The faster a river flows, the more sediments it transports or erodes.
Explanation:
Edgeunity Sample Answer
Answer:
There was more erosion in the Colorado Rockies scenario where there was steady rain compared to the scenario in the same area where there was only a drizzle. There is more erosion because the steady rain increased the volume of the river more than the drizzle did. Because there was more water added to the river, the river flowed faster. The faster a river flows, the more sediments it transports or erodes.
Explanation:
Five factors that affect the rate of chemical reactions and describe each
Answers
Answer:
Five factors typically affecting the rates of chemical reactions will be explored in this section: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants
Explanation:
True or False: Eukaryotic cells are cells that contain a nucleus.
Answers
the eukaryotic cells does contain a nucleus
Answer:
The answer is false
Explanation:
Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill.
The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made. As the ball rolls across the grass, it slows down. The kinetic energy of the ball is converted to other forms of energy.
Which best describes Alana’s error?
The motionless ball does not have energy because it is still.
Kinetic energy is not made; it is a result of energy transformation.
The ball cannot slow down unless someone touches it.
The energy is not converted; it disappears.
Answers
Answer:
It's actually B that guy is wrong on Edge.
Explanation:
Alana's error regarding the energy of the ball is that kinetic energy is not made; it is a result of energy transformation. The second option is true regarding the energy conversion.
What are the various types of energy?The law of conservation of energy says that energy is neither created nor destroyed but only converted from one form to another, such as from the kinetic to the potential and vice versa. Here, the ball is placed at the top, where it has no motion, but the ball has potential energy, and that potential energy gets converted into kinetic energy when the ball starts to roll down the hill. After sometime, the ball spontaneously stopped on the ground, and the kinetic energy was converted into potential energy.
Hence, Alana's error regarding the energy of the ball is that kinetic energy is not made; it is a result of energy transformation. The second option is true regarding the energy conversion.
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What is an action of the highlighted muscle?
Answers
Answer:
Hi there Braniac! I know your new so let me help you out!
If you would like to ask a question that is not easy to type, simply take a screenshot and press the attach file button! Find your screenshot, then be on your way to better grades and more understanding! Hope this helps!
How does a stem cell become specialized into a heart cell?
Answers
Answer:
Explanation:
stem cells are manipulated to specialize into specific types of cells, such as heart muscle cells, blood cells or nerve cells. The specialized cells can then be implanted into a person. For example, if the person has heart disease, the cells could be injected into the heart muscle.
Daughter cells are created when stem cells divide properly in the body or a lab to create more cells. These daughter cells either develop into fresh stem cells or into differentiated cells with a more specific role, such as bone, blood, brain, or heart muscle cells.
How are stem cells differentiated?According to research, cardiomyocytes made from pluripotent stem cells can develop into beating human heart muscle cells that both produce the required signals and restore muscle lost during a heart attack.
Stem cells have the ability to multiply and develop into a variety of relatively mature cells. When inserted into a blastocyst, embryonic stem cells have the ability to develop into any organ in the human body.
Therefore, theoretically, every organ in the body might be replaced using embryonic stem cells.
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Which of the following galaxy types is usually made of mostly older stars
Answers
Jamal ate a meal of rice before seeing his doctor. Rice is made of mostly starch molecules. Jamal has been feeling tired a lot, so his doctor gave his a test that found jamal’s cells contained normal levels of oxygen and low levels of glucose. Does this explain why Jamal has been feeling tired
Answers
Answer:
Yes, Jamal’s respiratory system is working, but his digestive system is not breaking down starch molecules into glucose for his cells.
Explanation:
Jamal ate a meal of rice before seeing his doctor. Jamal has been feeling tired because his body cannot breakdown the starch molecules into glucose and thus has low levels of glucose in the blood.
What is a healthy diet?
A healthy diet is a diet which maintains or improves the overall health of an individual. A healthy diet provides the body with all the essential nutrients in sufficient amount. A healthy diet contains fluids, macronutrients such as protein, micronutrients such as vitamins with adequate amount of fiber and food energy.
Jamal is eating a meal of rice before seeing the doctor. He is feeling tired. After the test, it was observed that the oxygen level is normal however he has a low level of glucose. This is because rice contains high amount of starch, which is a polysaccharide of glucose. This starch is broken down by the body into glucose units which are used by the cells in producing energy. However, Jamal's body cannot break down this starch into glucose molecules and thus show low levels of glucose molecules.
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First one answer gets a brainly. Please look at the picture & answer the question .
Answers
Answer:
A and C
Explanation:
40 points :))) please help and I will give you Dino nuggiez
Answers
Answer:
i cant see it well
Explanation:
Answer:
damage, genes, oncogenes, divide, healthy, self-destruct, damaged, Apoptosis
Write two differences between the unicellular and multicellular organisms.
what is a cell membrane
Answers
Answer:
The cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid.
Explanation:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. ... Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions
Answer: The cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid.
Explanation:
Cell membrane, also called plasma membrane, thin membrane that surrounds every living cell, delimiting the cell from the environment around it.
which blood vessel has the highest concentration of glucose
Answers
Answer:
The mesenteric veins and the hepatic portal vein mate
The ________nervous system controls body functions that do not require thought
Answers
Answer:
Autonomic nervous system
Explanation:
Autonomic nervous system controls body functions that do not require thought.
Answer:
AUTONOMIC nervous system
Explanation:
The AUTONOMIC nervous system controls body functions that do not require thought.
On a strand of DNA, the nucleotides are held together by what?
Answers
Answer:
Hyrdrogen bonds!
Explanation:
Trust me! Try it. You'll see.
Identify the statements that best describe the carbon cycle.
A. Carbon is stored only in rocks and is released when we burn them.
B. Carbon is stored in the biosphere, the atmosphere, the hydrosphere, and the geosphere.
C. A carbon source is a process that returns carbon to the environment.
D. Carbon can be used only if large amounts of heat are added to a system.
OE. A carbon sink is a process that stores carbon.
OF. Calcium carbonate is found in sea shells.
G. Plants use carbon in photosynthesis.
OH. We will one day use up all of Earth's carbon
Answers
Answer:
It's d
Explanation:
The statement that best describe the carbon cycle is a carbon source is a process that returns carbon to the environment. Thus, option C is correct.
What is the carbon cycle?The carbon cycle refers to the movement of this element (carbon) between biotic and abiotic factors. Carbon is a harmful greenhouse gas present in the atmosphere which is associated with climate change. A carbon source is a process that returns carbon to the environment and the carbon can be used only if large amounts of heat are added to a system that carbon sink is a process that stores carbon.
The carbon cycle shows the continuous movement of carbon atoms between the biosphere, atmosphere, hydrosphere, and geosphere. Some processes store carbon while others release it.Photosynthesis is a process in which carbondioxide gas that is present in the atmosphere moves into the plant body for the production of food in the presence of sunlight.
Therefore, The statement that best describe the carbon cycle is a carbon source is a process that returns carbon to the environment. Thus, option C is correct.
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