The family pedigree illustrated in picture describes congenital cataracts in hum

Question

The family pedigree illustrated in picture describes congenital cataracts in humans, which is a rare phenotype seen in humans. Squares = Males; Circles = females
Further pedigree analysis suggests this condition is not known in the family of No. 1 male of this pedigree.

This diagram indicates congenital cataracts are inherited as a/an ______. Furthermore, the No.2 female must be _____ in order for this pedigree to occur. Person 5 in the second generation marries a man who does not have cataracts. Two of their four children, a boy and a girl, develop cataracts. What is the probability that their next child will be a girl with cataracts?


A. Autosomal dominant; heterozygous;

Explanation / Answer

The family pedigree illustrated in picture describes congenital cataracts in humans, which is a rare phenotype seen in humans. Squares = Males; Circles = females
Further pedigree analysis suggests this condition is not known in the family of No. 1 male of this pedigree.
This diagram indicates congenital cataracts are inherited as a/an ______. Furthermore, the No.2 female must be _____ in order for this pedigree to occur. Person 5 in the second generation marries a man who does not have cataracts. Two of their four children, a boy and a girl, develop cataracts. What is the probability that their next child will be a girl with cataracts?


A. Autosomal dominant; heterozygous; ¼

B. Autosomal recessive; heterozygous; 1/2-correct answer

C. Sex-linked dominant; homozygous; 3/4

D. Sex-linked recessive; heterozygous; 100%

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.