Question

The trait of “freckles” is recessive and represented by a. No freckles is dominant 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?

Answer 1

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.