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2 votes
Please help fast!!

Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree.


Based on the pedigree that is shown, which describes John?

A) carrier for hemophilia
B) expresses hemophilia
C) does not have hemophilia
D expresses hemophilia and died of complications

Please help fast!! Hemophilia is an X-linked recessive disorder (Xh) that is passed-example-1

2 Answers

7 votes

Answer:

c

Step-by-step explanation:

User Robin Hawkes
by
8.5k points
3 votes
Based on the pedigree shown, John C) does not have hemophilia. In X-linked recessive disorders, females must have both recessive alleles Xh to express the trait. On the other hands, males have only one X chromosome on which will depend the expression of the trait. John's genotype is XHY. So, he has dominant allele XH and he does not have hemophilia or he is a carrier for the trait.
User Mark Henry
by
8.4k points
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