Question

question 4 (mandatory) (10 points)
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in hemophilia, which sex is the carrier and which sex expresses the disease?

Explanation:

Hemophilia is an X - linked recessive disorder. Females have two X chromosomes (XX). A female can be a carrier if she has one normal X and one X with the hemophilia allele. Males have one X and one Y chromosome (XY). If a male gets the X chromosome with the hemophilia allele, he will express the disease as he has no other X to mask the effect.

Answer:

Females are the carriers and males express the disease.