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Problem: The hemophilia disease is caused by an X-linked recessive gene (gene H). The pedigree of a family with history of hemophilia disease is shown below. Which of the following is the genotype of II-1?A. XhXhB. XHX?C. XHXHD. XHXhE. XHYF. XhY

FREE Expert Solution

Remember that in a pedigree analysis, the genotypes still follow the rules from Mendel's work. As such, the dominant allele of a gene should be represented by a capital letter while the recessive allele is small for the same letter. The recessive hemophilia allele is therefore represented by h in the X chromosome.

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Problem Details

The hemophilia disease is caused by an X-linked recessive gene (gene H). The pedigree of a family with history of hemophilia disease is shown below. Which of the following is the genotype of II-1?

A. XhXh

B. XHX?

C. XHXH

D. XHXh

E. XHY

F. XhY

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