Which phenotype is not associated with a single pair of genes?
A)extraversion
B)curly hair
C)nearsightedness
D)red-green colour blindness

Question

Quizplus · Accepted Answer

Extraversion is a complex trait influenced by multiple genes and environmental factors. It cannot be attributed to a single pair of genes.

Other options:

B) Curly hair can be influenced by a single pair of genes or multiple genes. 
C) Nearsightedness (myopia) is linked to multiple genetic and environmental factors. 
D) Red-green colour blindness is a sex-linked genetic disorder caused by a single pair of genes on the X chromosome.

Which Phenotype Is Not Associated with a Single Pair of Genes