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The gene for redness is dominant to the gene for whiteness. If true-breeding plant with red...

The gene for redness is dominant to the gene for whiteness. If true-breeding plant with red flowers is crossed with a true-breeding plant with white flowers, their offspring will be?

A. red and true-breeding

B. red hybrids

C. white and true-breeding

D. pink

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Answer #1

Since the parental plants are both true breeding we know both the parents are homozygous dominant. So, after the F1 cross, all offsprings will be heterozygous genotype. Now as stated in the question, the gene for redness is dominant to the gene for whiteness. Thus all offsprings will be red hybrids and not true breeding. The correct option is thus B. red hybrids.

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