Question

Hemophilia is a sex–linked disorder that is caused by a defective gene on the X chromosome. What will be the pattern of inheritance of the offspring of a hemophiliac father? A. The father passes the gene to all his sons but to none of his daughters. B. The father passes the gene to all his daughters but to none of his sons. C. The father passes the gene to all his daughters and all his sons.

Answer 1

Option (C).

Step-by-step explanation:

Sex linked disorder may be defined as the disorders that are caused by the mutation or defects in the sex chromosome. Two main types of sex linked disorder are sex linked recessive and sex linked dominant.

Hemophilia is caused due to the defect in the clotting factor. This is a sex linked recessive disorder that are transferred from female to their sons. The hemophilic father has only one X chromosome and they will transfer this affected X chromosome to their daughters and none of their sons. Since, sons receive Y chromosome from their father.

Thus, the correct answer is option (C).

Answer 2

"The father passes the gene to all his daughters but to none of his sons" is the one among the following that will be the pattern of inheritance of the offspring of a hemophiliac father. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.