Answer:
B)an agent that causes a mutation in DNA.
have a nice day
Explanation:
Mutagen is the chemical or biological agent that results in mutation in the genetic or the hereditary material of the living organism. Thus, option B is correct.
What are mutagens?Mutagens are substances that can be chemical or biological and causes alterations and modifications in the genetic material of the organisms. They can cause positive and negative damages in the process of the replication and repair mechanism.
UV rays, X rays, ROS, base analogs, alkylating agents, transposons, viruses, etc., are some examples of mutagens that can cause somatic or germline mutations. They can cause silent, missense, nonsense, deletion, addition, or substitution mutations.
Therefore, mutagens cause a mutation by altering the genetic material.
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In horses, the Overo gene, Ov, produces a white splotch pattern on the coat. The overo phenotype is seen only when a horse has one Ov copy, Ovov. Horses with two Ov copies, OvOv, die soon after birth and are called white overo because they are completely white. Horses with no Ov copies are solid colored, ovov. The Leopard complex gene, Lp, shows incomplete dominance and controls white spotting. One Lp allele, Lplp, produces the leopard phenotype, in which there are spots everywhere. Two Lp alleles, LpLp, produce the fewspot phenotype, in which the horse is mostly white with colored spots. A horse that is both overo and leopard is called pintaloosa, and these horses are spotted with splotches. A horse that is overo and fewspot is considered fewspot because the white areas from Lp is indistinguishable from the white from Ov.
Number of:
Solid:____
Fewspot:_____
White Overo:______
Answer:
Hello your question is incomplete below is the missing part
Suppose that 16 pairs of pintaloosa horses have one offspring per pair. How many of each phenotype would be expected? Determine the number out of 16 expected for each phenotype. Only count phenotypes for offspring expected to live past one week of age.
Answer :
Number of
solid, fewspots: 1/16
solid, leapord: 2/16
solid, white: 1/16
Fewspots: 2/16
white overo: 2/16
Explanation:
Using the given information it can seen that one copy of OV will result in Overo, whereas two copies OVOV offspring will die soon after birth. If 16 pairs of pintaloosa (OVovLPlp) horses are mated and each have one pair of offspring, then it can represented in the table attached below:
from the table we can deduce that :
Number of
solid, fewspots: 1/16
solid, leapord: 2/16
solid, white: 1/16
Fewspots: 2/16
white overo: 2/1
5. Besides being part of the composition of bone, why else do mammals need calcium?
Answer:
It's important for the contracting muscle
Explanation:
Besides being part of the composition of bones, calcium is needed by mammals for the following processes:
Formation of skeletons and teeth.Muscle contraction.Regulation of normal heart rate and nerve functions. Blood clotting. What is Calcium in living organisms?Calcium in living organisms may be defined as an important nutrient that all living organisms require, including humans in order to develop various organs like teeth and bones as well as for metabolic processes.
Apart from being part of the composition of bones, calcium is also required for the proper development of teeth and skeletons. The movement of calcium ions plays an essential role in the contraction of muscles.
The influx of calcium ions into the cells of the heart significantly enhances the heart rate of an individual in the range of 1.6 to 14.10 mm.
It also plays a critical role in blood clotting.
Therefore, it is well described above.
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Which of these parts of the cell membrane are nonpolar and keep cells
separate from water?
The loss of water through osmosis is known as___________.
Answer:
semipermeable membrane
Explanation:
comment if u need help or a better explanation etc
Where does the bloody deposit the
oxygen and nutrients?
Answer:
The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.
How are Gymnosperm and Angiosperm plants different?
Answer:
Hey! :D
Explanation:
The gymnosperms, also known as Acrogymnospermae, are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes. The term "gymnosperm" comes from the composite word in Greek: γυμνόσπερμος, literally meaning "naked seeds". The name is based on the unenclosed condition of their seeds. The non-encased condition of their seeds contrasts with the seeds and ovules of flowering plants, which are enclosed within an ovary. Gymnosperm seeds develop either on the surface of scales or leaves, which are often modified to form cones, or solitary as in yew, Torreya, Ginkgo.
hope this helps
The stems of a plant:
A. carry water and minerals
B. hold the plant in the ground
C. take in carbon dioxide from the air
D. o make food
Match the monomer to the correct polymer. (Link one from the top list to one from the bottom list, until each one has a link to one from the other.)
--
1a. polypeptide/protein
1b. polysaccharide
1c. nucleic acid
1d. lipid
--
2a. monosaccharide
2b. nucleotide
2c. fatty acid
2d. nucleotide
Answer:
Polymer Monomer
1. Polypeptide/protein -----------------------→ Amino acid
2. Polysaccharide ------------------------------→ Monosaccharide
3. Nucleic acid -----------------------------------→ Nucleotide
4. Lipid ----------------------------------------------→ Fatty acid
Explanation:
Monomers are simple molecules that when joined together and form chains become polymers, a process called polymerization, which is mediated by polymerase enzymes.
Monomers are simple molecules that when joined together and form chains become polymers, a process called polymerization, which is mediated by polymerase enzymes.
Peptides and proteins are formed by the addition of specific amino acid sequences. Polysaccharides, or complex sugars, are formed by the addition of monosaccharides, such as glucose. A nucleic acid, such as DNA or RNA, consists of chains or strands that are formed by nucleotide sequences. Lipids are the polymerized form of fatty acids.Describe how the hydrogen ion pump stores energy in a new place .
Answer:
energy is harvested and stored as chemical energy in ATP through chemiosmosis, the movement of hydrogen ions down their electrochemical gradient through the transmembrane enzyme ATP synthase, just as in the mitochondrion.
Explanation:
Living cells are classed as either prokaryotic or eukaryotic. Which of the following characteristic(s) identify both cell types, eukaryotic cells and prokaryotic cells? Select all that apply. have a nucleus contain cytoplasm comprise most multi-celled organisms mostly single-celled organisms have membrane-bound organelles are the smallest unit of living matter are produced by division of another cell contain DNA
Answer:
have a nucleus - Eukaryotic
contain cytoplasm - Both
comprise most multi-celled organisms - Eukaryotic
mostly single-celled organisms - Prokaryotic
have membrane-bound organelles - Eukaryotic
are the smallest unit of living matter - Both
are produced by division of another cell - Both
contain DNA - Both
Explanation:
1. Eukaryotic cells are cells that possess a membrane-bound nucleus that houses their genetic material.
2. Both eukaryotic and prokaryotic cells have a cytoplasm, which is the gelatinous substance where all other organelles and substances are found.
3. Most multicellular organisms comprises of eukaryotic cells.
4. On the other hand, most single celled organism, are Prokaryotic.
5. Eukaryotic cells, in addition to the possession of a membrane-bound nucleus, they also possess membrane-bound organelles e.g mitochondria, endoplasm reticulum.
6. Cells, generally, are the smallest unit of living matter. This comprises of both eukaryotic and prokaryotic cells.
7. Likewise, all cells arose from already preexisting cells according to the cell theory. Therefore, both eukaryotic and prokaryotic cells are made by the division of another cell.
8. Both prokaryotic and eukaryotic cells have a genetic material like DNA where they store genetic information.
WILL GIVE BRAINLIEST
Are the seasons (summer or winter) the same in the Northern and Southern Hemispheres
at the same time? When it is summer in the Northern Hemisphere, what season is it in the
Southern Hemisphere?
Answer: No they don't occur at the same time
Summertime in the northern hemisphere happens when it is winter in the southern hemisphere, and vice versa.
The tilt of the earth causes the seasons. The northern hemisphere's summertime means that the northern part of the earth gets more sunlight compared to the southern half, so the southern half experiences winter.
With the tilt held at the same angle, the earth revolves to another point in space, so that the northern hemisphere receives less sunlight and the southern hemisphere gets more. So the seasons swap.
Answer: Winter
Explanation: The tilt of the Earth determines the seasons for the Northern and Southern Hemisphere. When the Northern Hemisphere tilts toward the Sun, it experiences summer. At the same time, the Southern Hemisphere tilts away from the Sun. It experiences winter.
How does the salvation process work while you are eating
Answer:
TO MAKE THE FOOD SOFT.✌️✨what are the two main categories of an ecosystem 5th grade
What are the similarities between the different models used to quantify the growth of a population
Answer:The models used are exponential growth models and logistic growth models. They are similar because they both grow slowly. How does carrying capacity affect reproductive rates?In the real world, with its limited resources, exponential growth cannot continue indefinitely. Exponential growth may occur in environments where there are few individuals and plentiful resources, but when the number of individuals becomes large enough, resources will be depleted, slowing the growth rate.
Explanation:
The process of petrifaction can include which of the following:
• Silica from the ash soaks into the wood, turning it to stone when it dries
• Volcanic ash blows into the water
• Living plants like trees can be submerged in water
• All of the above
Help me please :(
Water pollution control came about as a result of _______.
a.
public protest of the condition of the Cuyahoga River
b.
the Cuyahoga River fire of 1969
c.
the California oil spill
d.
environmental assessments
Answer:
B. the Cuyahoga River fire of 1969
Explanation:
i just took the test
Water pollution control came about as a result of the Cuyahoga River fire of 1969.
What do you mean by Water pollution?Water pollution may be defined as the accumulation of undesirable substances in the water which make water harmful to living beings.
During the Cuyahoga River fire of 1969, the number of fire stations along the river doubled due to the fire that caught in the sewage water.
Therefore, water pollution control came about as a result of the Cuyahoga River fire of 1969.
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Write why is asexual is better. 1 paragraph
These organisms are prokaryotic cells, mostly
extremophiles.
Answer:
A extremeophile is a prokariyite,
Explanation:
Mitosis results in
o daughter cells with twice as much DNA as the parent cell
o daughter cells with the same genetic information as the parent cell
O four daughter cells
gametes
Can someone help pleaseeeee
Answer:
pelvic region is the answer
Answer:
A) Inguinal
Hope this helps!
What is the speed of bicycle B?
A. 0.2 km/min
B. 0.3 km/min
C. 4 km/min
D. 6 km/min
Carlos states that planets that are closer to the sun have a higher surface temperature than those that are further from the sun. Why do you think Carlos is correct or incorrect?
Answer:
Yes Carlos is correct.
Explanation:
The further away an object is from the heat source, the less heat it absorbs.
Answer:
Carlos is correct
Explanation:
He is correct because when the planets are closer to the sun they get a higher tempurture
Which structures transports sugars from the leaves to the roots
Answer:
- If I am not mistaken, I believe the answer Phleom.
Until the middle of the 20th century, doctors sometimes suggested that
people smoke in order to reduce stress. Since then, doctors have been asking
patients who smoke to quit.
What caused this change?
A. Studies have shown that tobacco and tar in cigarettes have
negative health effects.
B. Tobacco is an illegal drug, and doctors are required to discourage
its use.
C. Tobacco is a nonrenewable resource, and the government has
restricted its use.
D. Tobacco plants have been categorized as an endangered species,
Answer:
the answers for your question is A.
Patients to stop smoking, research has established the harmful effects of tobacco and the tar in cigarettes on human health, hence option A is correct.
What is the effect of smoking on health?One of the biggest health issues in the world today is tobacco use. Because of smoking, millions of individuals have bad health, and experts predict that smoking causes 8 million premature deaths annually. It has long been a significant health issue.
Up until the middle of the 20th century, physicians occasionally advised patients to smoke in order to relieve stress.
A significant social factor of tobacco usage has been the improvement in human attitudes toward smoking as a result of improved awareness of the negative effects of smoking.
Therefore, studies have shown that tobacco and tar in cigarettes have
negative health effects.
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Please answer! It’s 5 days over due
Answer:
Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains stem cells. The stem cells can develop into the red blood cells that carry oxygen through your body, the white blood cells that fight infections, and the platelets that help with blood clotting.
Answer:
Bone marrow is a spongy tissue found inside bones.
Red bone marrow involves the production of blood cells. Yellow bone marrow produces cartilage and is important for fat storage.
Which of the following substances is NOT able to simply diffuse across the 1 point
plasma membrane?*
Water
Oxygen
Carbon Dioxide
Sodium
Answer:
Sodium
Explanation:
because ions have a charge which prevents them from moving across the cell membrane through simple diffusion
what is short transfer cell in the tip of leaf?
Which macronutrient contains carbon, hydrogen, and oxygen molecules?
Answer:
Carbohydrates
Explanation:
Carbohydrates are one of the three macronutrients in the human diet, along with protein and fat. These molecules contain carbon, hydrogen, and oxygen atoms. Carbohydrates play an important role in the human body.
in which part does carbohydrate digestion begin
Answer:
Technically, it begins within the mouth. However, the actual digestion process begins almost halfway through/down the esophagus (throat).
QUESTION 5
A family left California to live in Idaho. Which of the following
occurred for the California population after this family moved?
SELECT AN ANSWER
emigration
immigration
Answer:
emigration
Explanation:
Emigration-the act of leaving one's own country to settle permanently in another; moving abroad.