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If a pure breeding black cow is test crossed, then what colour would you expect the...

  1. If a pure breeding black cow is test crossed, then what colour would you expect the offspring to be?

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Answer #1

Here, in the question first two important words to solve this question is pure breed.

now, what is pure breed- one whose parents and ancestors belong to same breed. Then it means that this cow genotype will be homozygous dominant BB

Now what is test cross- breeding of individual with phenotypically recessive individual.(bb)

BB X bb

four individuals produced with phenotype Bb. This means all individual are heterozygous dominant.

offspring will be of black colour

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