Question

which kind of allele results in the trait indicated by the green color being expressed in the individuals shown here?
○ recessive
○ x - linked dominant
○ dominant
○ x - linked recessive
(there is a pedigree chart on the right with a green - colored square labeled ww, a white - colored circle labeled ww, their offspring: a green - colored square labeled ww, a white - colored circle labeled ww, a white - colored square labeled ww, a green - colored circle labeled ww)

Explanation:

1. Analyze the pedigree: Individuals with genotype \( Ww \) (heterozygous) express the green trait, while \( ww \) (homozygous recessive) do not.
2. Recall allele expression: A dominant allele is expressed in both heterozygous (\( Ww \)) and homozygous dominant (though not seen here) genotypes. The green trait appears in \( Ww \) (heterozygous), so the allele for green is dominant. Recessive alleles are only expressed in homozygous recessive (\( ww \)), which don't show green. X - linked dominant would show sex - linked inheritance patterns (not evident here as both males and females have the trait in a non - sex - linked pattern from the pedigree).

Answer:

C. dominant