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postnew [5]
3 years ago
5

What a testcross? Why would you use recessive organism instead of a dominant

Biology
1 answer:
abruzzese [7]3 years ago
7 0

Answer:

Explanation:

If any recessive phenotypic individuals result from the cross, then the unknown individual must carry the recessive allele, and have the heterozygous genotype. A testcross helps reveal the genotype of an organism when that organism shows the dominant trait, such as agouti coat color in rats.

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The vegetal pole of a frog zygote differs from the animal pole in that ______. A. the vegetal pole has a higher concentration of
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The vegetal pole of a frog zygote differs from the animal pole in that the vegetal pole has a higher concentration of yolk.

After the fertilisation of the egg by the sperm in a frog, three regions are formed in the zygote. These are:

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  2. The grey crescent which is a small area with almost no pigmentation. It is present in between the upper animal pole and the lower vegetal pole.
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Thus, the vegetal pole of a frog zygote differs from the animal pole in that the vegetal pole has a higher concentration of yolk.

Learn more about the frog zygote here: brainly.com/question/14951741

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✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

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❖ Your body might need new cells to replace the old, damaged, cells that need to be repaired, or dead cells. Your body might also need more cells for you to grow.

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