Principle Of Inheritance And Variation Question 397

Question: A diseased man marries a normal woman. They have three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is:

Options:

A) Sex-linked dominant

B) Sex-linked recessive

C) Sex-linked character

D) Autosomal dominant

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Sex linked disorders follow, criss-cross inheritance pattern where affected father passes on the gene to their daughters.

The daughters receive one of their X - chromosome from their fathers.