Q genetic -

[ArchivalUser]

pern

About 5% of individuals in a particualr population are known to carry a recessive gene for poliodystrophy, an inherited disorder characterized by recurrent seizures and dementia with onset in early childhood. A 32-year-old healthy woman who had a brother with this disorder seeks genetic counseling. The patient's husband, an only child, does not know if his family has a history of the disorder. What is the probability that BOTH tha patient and her husband are carriers?

A- 1/20
B- 1/30
C- 2/3
D- 3/4
E- 3/8

[ArchivalUser]

katty

A,1/20

[ArchivalUser]

pern

Katty the q ask you for the probability of both , no the probability of the husband only! so this answer is wrong

[ArchivalUser]

mash

1/30
wife's brother has the ds==> both her parents r carriers.
she does not ve the ds==> her risk of being carrier is 2/3
frequency of mutant gene in general pop is (q)=5%=1/20
probability dat both r carriers =2/3*1/20=1/30

[ArchivalUser]

divya

answer according to me is B