(need good explanation with answer) 1) The family pedigree illustrated in pictur
ID: 28949 • Letter: #
Question
(need good explanation with answer)
1) 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
B. Autosomal recessive; heterozygous; 1/2-correct answer
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