The trait of "freckles" is dominant and represented by A. No freckles is recessive and represented by a. A researcher crossed two individuals, one homozygous dominant and the other heterozygous for freckles. Based on the data in the Punnett square, the researcher concluded that all offspring would have dominant as well as the recessive alleles. What comment would you make about his conclusion?

A) He is correct. Fifty percent of the offspring are heterozygous dominant.

B) He is correct. The dominant allele for the trait is preset in all the offspring.

C) He is incorrect. The homozygous dominant individual cannot provide a recessive allele.

D) He is correct. Both parents contribute at least one dominant allele to their offspring.

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26 August, 20:08

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Jaslene Frank · Answer 1

The answer is B. If one parent is homozygous dominant, both the alleles are for freckles, and there will be at least one A in every possible outcome.