QuestionSBA
QuestionChoice
This is the % chance of the child being a carrier.
10001578
b
50%
QuestionChoice
This is incorrect- there is a 25% chance given that CF is autosomal recessive.
10001579
c
75%
QuestionChoice
The inheritance pattern of CF is autosomal recessive.  This means that both copies of the gene in each cell must have a mutation for the individual to be affected rather than just a carrier of the gene. There is also a 25% chance that the child would be neither affected nor a carrier.
10001577
a
25%
QuestionChoice
This is incorrect- there is a 25% chance given that CF is autosomal recessive.
10001581
e
0%
QuestionChoice
This is incorrect- there is a 25% chance given that CF is autosomal recessive.
10001580
d
100%
Concept
Chapter
2693
3891
Genetic Inheritance
Topic
156
Medical Genetics
12862
A couple attends the GP for the wife's antenatal appointment. They would like to know the risk of their child having cystic fibrosis (CF).

What is the % risk of their child having CF given that both parents are carriers of the CF gene?
a