Question

a woman with jet black hair has the genotype DDEEFF. A man with dark blonde hair has the genotype DDeeff. What is the possible genotype for their offspring?

Answer 1

The offspring between a woman with genotype DDEEFF and a man with genotype DDeeff can have genotypes either DDEeFf or DdEeFf since 'D' is dominant for dark hair, and both 'E' and 'F' contribute to other hair characteristics.

Step-by-step explanation:

The possible genotypes of the offspring between a woman with genotype DDEEFF and a man with genotype DDeeff would require analyzing each pair of alleles independently. The D and d alleles are responsible for hair color, with D (dark hair) being dominant over d (blond hair), and E and F would each contribute to other hair characteristics.

• For the first pair of alleles (D/d), the mother can only contribute 'D', and the father can contribute either 'D' or 'd'. Therefore, the offspring can have genotypes 'DD' or 'Dd'.
• For the second set of alleles (E/e), the mother can only contribute 'E', and the father can only contribute 'e'. Thus, all offspring will have the 'Ee' genotype.
• For the third set of alleles (F/f), the scenario is the same as the second: all offspring will inherit 'Ff'.

The possible genotypes for the offspring are combining the permutations of the first allele pair with the fixed outcomes of the second and third allele pairs. Thus, the offspring could have either a DDEeFf or DdEeFf genotype.