(a)[2]
Explain the meaning of sex linkage.
(b)[5]
Complete the genetic diagram below using suitable symbols.
(c)[1]
A woman who is heterozygous for CI has a baby with a man with a normal iris. State the probability that their child will have CI.
Biology 9700 · AS & A Level · Passage of information from parents to offspring
Passage of information from parents to offspring — practice question
In humans, a rare recessive allele that is sex-linked causes the iris in the eye to have a different shape. This condition is called cleft iris (CI).