Multiple Choice
Brachydactyly type D is human autosomal dominant condition in which the thumbs are abnormally short and broad. In most cases, both thumbs are affected, but occasionally just one thumb is involved. The pedigree above shows a family in which brachydactlyly type D is segregating. Filled circles and squares represent females and males who have involvement of both thumbs. Half- filled in symbols represent family members with just one thumb affected?
There is evidence of variable expressivity and incomplete penetrance in this family. Which individu most likely nonpenetrant for the trait?
A) III- 10
B) III- 11
C) IV- 1
D) II- 4
E) IV- 5
Correct Answer:

Verified
Correct Answer:
Verified
Q50: In Labrador retrievers, coat color is controlled
Q51: In sheep, coat color is influenced by
Q52: King George III of England and other
Q53: Most people with the dominant mutant polydactyly
Q54: Which mode of inheritance produces heterozygotes with
Q56: You are looking at the color of
Q57: Most combinations of different ABO alleles result
Q58: The amount of enzyme activity in a
Q59: Bateson and Punnett crossed two white- flowered
Q60: Proper cross- matching of blood type is