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Aleks04 [339]
3 years ago
8

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

is the probability that a female child of Charles and Marie would suffer from hemophilia?
a. 0 percent
b. 25 percent
c. 50 percent
d. 100 percent
Biology
2 answers:
Eva8 [605]3 years ago
8 0

Answer:

It's 0%

Explanation:

It's 0%

Radda [10]3 years ago
6 0
Since hemophilia is an X-linked recessive disorder, the probability depends on the X alleles.
So, if father has dominant allele (H), the probability that a <span>female child would suffer from hemophilia (genotype: hh) is 0%, no matter of mother's genotype:
 
                    Father              Mother
Parents:       H             x          Hh
Daughter:     HH or Hh

</span>      Father              Mother
Parents:       H             x          HH
<span>Daughter:     HH
</span>
      Father              Mother
Parents:       H             x          hh
<span>Daughter:     Hh or Hh
</span>
But, if the father has recessive allele, the probability that a <span>female child would suffer from hemophilia (genotype: hh) will depend on mother's genotype.
If mother is dominant homozygous, there will be 0% of possibility:
</span>                       Father              Mother
Parents:             h          x          HH
<span>Daughter:     Hh
</span>
If mother is recessive homozygous, the possibility is 100%:
                    Father              Mother
Parents:           h         x         hh
<span>Daughter:     hh
</span>
If mother is heterozygous, the possibility is 50%:
                   Father              Mother
Parents:          h         x         Hh
<span>Daughter:     Hh or hh</span>

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