with work shown and concepts
and formulas explained, please!
Homework Answers
Answer- 1/16
Explanation- As mentioned, the Huntington's disease is dominant as well as autosomal. This means that the diseased person has genotype - HH or Hh. H represents Huntington's allele.
So, if female and male both are heterozygotes, there genotypes will be-
Hh × Hh (Parents)
HH, Hh, Hh, hh (Children)
So, HH, Hh, Hh will be diseased but hh being recessive will be normal. So, probability comes to be 1/4. Let's suppose this is for child aged 5 yrs.
Now, same will be for child aged 7 yrs that is equal to 1/4.
To know the probability of neither of them having the disease, the multiplication rule is used-
1/4 × 1/4 = 1/16.
Hence, 1/16 is the probability.
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a.
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b.
Autosomal recessive
c.
X-linked dominant
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X-linked recessive
e.
More than one of the above are possible.
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