Question

Which feature is found among an autosomal recessive pedigree?

a. heterozygotes have a normal phenotype.
b. affected children will have at least one affected parent.
c. heterozygotes are affected.
d. both males and females are affected with equal frequency.
e. the trait is carried on the y chromosome?

Answer 1

One feature found among an autosomal recessive pedigree is that heterozygotes have a normal phenotype. Autosomal recessive are several ways that a trait, disorder or a disease can be passed down through families. Autosomal disorder means that two copies of an abnormal gene must be present for the disease or trait to develop, and therefore, a heterozygote will show a normal phenotype.