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guapka [62]
3 years ago
14

How is HIV is a modern-day driving force for human evolution?

Biology
1 answer:
juin [17]3 years ago
4 0

Answer:

Testing positive for HIV means a high chance of death and a good chance of lower reproduction rates. But some people are immune to HIV, which makes them more evolutionarily fit, likely to live longer, likely to reproduce more, which would increase the frequency of the immune allele in the population. Over time, this increase in frequency of the gene that causes immunity could spread across the human race and cause it to evolve.

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The ____________________ is the reproductive structure of gymnosperms.
Paha777 [63]

Answer:

seed cones and pollen cones

Explanation:

In gymnosperms, their reproductive structures include the pollen cones, which produce pollen grains or the male gametophyte; and the seed cones, which produce female gametophyte.

4 0
2 years ago
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Hershey and Chase's experiment allowed them to discern whether DNA or proteins contain genetic information because __________.
kakasveta [241]

Answer:

T2 viruses consist only of proteins and DNA and only the DNA was injected into the host cells

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2 years ago
Which of the following does NOT increase genetic variation in a population?
slega [8]
D is the answer. Mutations can cause MANY problems. 
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3 years ago
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The large diversity of shapes of biological molecules is possible because of the extensive presence of _____ in the molecules. t
Yanka [14]

Answer;

Carbon

Explanation;

-The large diversity of shapes of biological molecules is possible because of the extensive presence of carbon  in the molecules.

-The major classes of biological molecules that are important for all living things are carbohydrates, lipids, proteins, and nucleic acids. These molecules differ in structure and function, in part, because of different functional groups.

All organic molecules contain carbon atoms. Biological macromolecules are organic, meaning that they contain carbon. In addition, they may contain hydrogen, oxygen, nitrogen, phosphorus, sulfur, and additional minor elements.

-Carbon qualifies as the foundation element for molecules in living things. It is the bonding properties of carbon atoms that are responsible for its important role.

4 0
3 years ago
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How many cells make up the nucleus
lyudmila [28]

Answer:

3.

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there are three things that make up any nucleus:

Protons

Neutrons

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The amount of each will very by what type of atom it is, but the things that make up a nucleus do not change when in the body.

7 0
3 years ago
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