Read the following passage and answer the questions that follow :
Haemophilia is a sex-linked recessive disease. Study the pedigree analysis given below showing the inheritance of the disease in a family and answer the questions that follow :(c) (i) Write the possible genotype of the individuals 2 and 5.
Haemophilia is a sex-linked recessive disease. Study the pedigree analysis given below showing the inheritance of the disease in a family and answer the questions that follow :
(c) (i) Write the possible genotype of the individuals 2 and 5.
Show Hint
Solution and Explanation
Individual 5 is a shaded male. A male has one X, so he is \( \mathrm{X^{h}Y} \).
Step 2: Individual 2:
Individual 2 is a normal female, so she has at least one \( \mathrm{X^{H}} \).
Her son 5 is haemophilic, so she must have given him \( \mathrm{X^{h}} \).
So individual 2 is a carrier, \( \mathrm{X^{H}X^{h}} \).
Final Answer:
Individual 2: \( \mathrm{X^{H}X^{h}} \) (carrier). Individual 5: \( \mathrm{X^{h}Y} \).
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