Question

the figure above shows a pedigree chart for a family, some of whose members exhibit the dominant trait, w. affected individuals are indicated by a dark square or circle. what is the genotype of individual ii - 5? ww ww ww ww or ww

Explanation:

Step1: Analyze the trait inheritance

Since the trait is dominant, affected individuals have at least one dominant allele (W). Unaffected individuals have the genotype ww.

Step2: Observe II - 5's phenotype

Individual II - 5 is not affected, so must have two recessive alleles.

Answer:

ww