Question of the Day

Test your knowledge with our question of the day based on themes similar to those in previous exams, including topic areas where candidates may have previously performed poorly.

Theme:Genetics in primary care

You are seeing a couple who are keen to start a family.

The woman tells you that she is a carrier of the cystic fibrosis (CF) gene. She was tested as a child when her older brother was diagnosed with CF.

The husband has recently been tested and was found also to be carrying the CF gene.

1. What is the probability of this couple having a child affected by CF?

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