Question

If a cross for widow’s peak was conducted between a homozygous dominant and a heterozygote, it is expected that all organisms of the offspring will have widow’s peak. Even though all have the widow’s peak, they can _________.

Answer 1

Answer:

be genotypically different

Explanation:

• Widow's peak is an example of a dominantly inherited trait, this means that any individual who receives even a single copy of the dominant allele would have a widow's peak present in the phenotype.

• In the given question, the cross is made between a homozygous dominant individual (let the genotype be WW) and a heterozygote (Genotype Ww).

• The cross can be represented as follows :

WW X Ww ----> WW Ww Ww WW

From the cross it can be seen that the offsprings will have the genotype of either WW or Ww, however, since W is dominant over w, the phenotype will always be the presence of widow's peak.