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Scilla [17]
2 years ago
11

Which explanation describes how natural selection produces changes in organisms?

Biology
1 answer:
blagie [28]2 years ago
3 0

Answer: B. Natural selection occurs when a favorable phenotype allows for differential reproductive success in a population of organisms.

Explanation: Good luck! :D

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The findings from cross-cultural research on the rates of births to unmarried mothers in 10 industrialized nations indicate that
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PLEASE HELP ASAP 5 MINUTES LEFT<br><br> what is the role of the enzyme diaphorase
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What are the steps of creating a DNA profile
Neporo4naja [7]

Answer:

The DNA testing process is comprised of four main steps, including extraction, quantitation, amplification, and capillary electrophoresis.

Explanation:

1. Separate white and red blood cells with a centrifuge.

2. Extract DNA nuclei from the white blood cells. ...

3. Cut DNA strand into fragments using a restriction enzyme.

4. Place fragments into one end of a bed of agarose gel with electrodes in it. 5. Use an electric current to sort the DNA segments by length.

5 0
3 years ago
A sexually reproducing animal has two unlinked genes (on separate chromosomes), one for head shape (H) and one for tail length (
Verizon [17]

Answer:

a) HT

Explanation:

This question shows an animal with two distinct unlinked genes i.e. on different chromosomes. One gene codes for head shape and the other for tail length. The gene for head shape possess alleles H and h, while gene for tail length possess alleles T and t.

According to Mendel's law of independent assortment, the alleles of a gene will separate into gametes independently of the alleles of another gene. This occurs in such a way that each gamete will contain only one allele from a gene.

Based on this principle, an animal with genotype HhTt will undergo meiosis and randomly produce gametes with the following allelic combinations: HT, Ht, hT, and ht. As seen in the gametes, only one allele of a gene occured in a gamete at a time.

Therefore, HT is the genotype possible in a gamete of parent: HhTt.

6 0
2 years ago
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