What a testcross? Why would you use recessive organism instead of a dominant organism to find the genotype of the unknown organism?

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asked Oct 25, 2021 122k views

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CSolanaM · Answer 1 · 2021-10-29T07:41:55+0000

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Step-by-step 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.

What a testcross? Why would you use recessive organism instead of a dominant organism to find the genotype of the unknown organism?

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