Question

question completion status: question 40 of 50 question 40 imagine that beak color in a finch species is controlled by a single gene. you mate a finch homozygous for a black beak with a finch homozygous for a white beak and get many offspring, with gray beaks. this is likely an example of 1. incomplete dominance. 2. codominance. 3. pleiotropy. 4. x - linked inheritance.

Explanation:

• Incomplete dominance occurs when the heterozygous phenotype is intermediate between the two homozygous phenotypes. Here, the offspring (heterozygous) have gray beaks (intermediate between black and white).
• Codominance would show both traits (e.g., black and white patches). Pleiotropy is when one gene affects multiple traits. X - linked inheritance is related to genes on the X - chromosome.

Answer:

1. incomplete dominance.