In a hypothetical population, matings involving two individuals heterozygous for the phenylketonuria allele on chromosome 12 result in 10% of the offspring showing the effects of the disease. This percentage arises because: A. the trait has pleiotropic effect B. the trait assorts independently C. the trait has low expressivity D. the trait has only partial penetrance E. the trait is sex-influenced

In a hypothetical population, matings involving two individuals heterozygous for the phenylketonuria allele on chromosome 12 result in 10% of the offspring showing the effects of the disease. This percentage arises because: A. the trait has pleiotropic effect B. the trait assorts independently C. the trait has low expressivity D. the trait has only partial penetrance E. the trait is sex-influenced

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter13: Patterns In Inherited Traits

Section: Chapter Questions

Problem 14SA: The phenotype of individuals heterozygous for ________ alleles comprises both homozygous phenotypes....

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	A.	the trait has pleiotropic effect
	B.	the trait assorts independently
	C.	the trait has low expressivity
	D.	the trait has only partial penetrance
	E.	the trait is sex-influenced