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Vera_Pavlovna [14]
3 years ago
5

Populations change naturally over time. Which mechanism is a method of artifical selection rather than natural selection?

Biology
2 answers:
Aleks04 [339]3 years ago
4 0
The answer is C) selective breeding. This means that humans are deciding what to breed which means this is not a natural selection, but rather an artificial selection.
Zinaida [17]3 years ago
3 0

Answer:

c

Explanation:

C) selective breeding

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The words ""antigen"" and ""virus"" are interchangeable.
andrew11 [14]

Answer:

False

Explanation:

A virus (which is a pathogen) has a lot of antigens on its surface, so they can't be used interchangeably.

6 0
3 years ago
What are chromatids and how do they differ from chromosomes
Molodets [167]
Chromatids are only called as chromatids when they are sister chromatids, meaning that when chromosome have two double stranded DNA attached together, each of the double stranded DNA is a sister chromatid, and while the whole thing (the two sister chromatids that are attached together) is called a chromosome.

So after the DNA has been replicated, the chromosome consist of 2 sister chromatids, attached to each other at their centromere.

Overall, sister chromatid is one of the two double stranded DNA in a replicated chromosome, and chromosome is the whole "X" shape that we see. For example, in humans, after the S phase of interphase in the cell cycle, we have 46 chromosomes, with 92 chromatids, since each chromosome is an "X" shape, by having two sister chromatids.

Hope this helps!
7 0
3 years ago
A hydra is an aquatic organism that lives in fresh water. During reproduction an outgrowth begins to form on the parent. The out
maksim [4K]

The answer is; asexual reproduction

In specific, this type of asexual reproduction is called budding. In this type of reproduction, the offspring is completely identical to the parent and there is little room for variation as in the case of sexual reproduction. Other living organisms that exhibit this type of reproduction are yeast, bacteria, and protozoans.


7 0
3 years ago
Read 2 more answers
Do all polypeptides have tertiary structures
andreev551 [17]
Yes, all polypeptides have tertiary structures. All proteins have primary, secondary and tertiary structures. However, quaternary structures only arise when a protein is made up of two or more polypeptide chains. Hope this answers the question. Have a nice day.
4 0
3 years ago
A normal plant cell holds water in the vacuole of the cell. This large organelle also gives the cell support. Suppose a plant is
BigorU [14]
<span>The water diffuses out of the cell to equalize the solute concentrations

Salt is too big to pass through the cell and water is the only so water tries to "balance" the concentration on the inside and outside.
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4 0
3 years ago
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