The accompanying figure is a pedigree of a fairly common human hereditary trait in which the boxes represent males and the circles represent females.Shading symbolizes the abnormal phenotype. Given that one gene pair is involved,what is the inheritance pattern?
A)recessive,autosomal
B)recessive,X linked
C)dominant,X linked
D)sex- influenced inheritance
E)dominant,autosomal

Question

The accompanying figure is a pedigree of a fairly common human hereditary trait in which the boxes represent males and the circles represent females.Shading symbolizes the abnormal phenotype.  Given that one gene pair is involved,what is the inheritance pattern?
A)recessive,autosomal 
B)recessive,X linked 
C)dominant,X linked 
D)sex- influenced inheritance 
E)dominant,autosomal

Quizplus · Accepted Answer

The trait is not seen in all generations, which suggests a recessive inheritance pattern. As both males and females are affected, it is likely autosomal rather than X-linked.

The Accompanying Figure Is a Pedigree of a Fairly Common