Question

Haemophilia is mentioned as trait carried by the mother and to her sons. What is the pattern of inheritance for this trait​

Answer 1

Explanation:

The son can get from the mother either her X chromosome with the hemophilia gene or her X chromosome with the normal blood clotting gene. If the son gets his mother's X chromosome with the hemophilia gene he will have hemophilia. If he inherits his mother's other X chromosome, he will have normal blood clotting.

Answer 2

Concept: Haemophilia is a trait carried by the mother and transfer it to her son.

Find:What is the pattern of inheritance for this trait​?

Solution: Haemophilia is carried on one of the mother's chromosomes. It means that It is carried on the X chromosome and transfer to her son. In father, it is carried by Y chromosome that's why it can't transfer in the son from father.

Final answer: X-linked is the pattern of inheritance for this trait.

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