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s344n2d4d5 [400]
3 years ago
11

Which of the following is most likely an indication of a chemical change

Biology
1 answer:
Masja [62]3 years ago
7 0
Color, smell/ odor, taste
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In drosophila melanogaster, white eye is a x-linked recessive
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In Drosophila melanogaster, white eye is an X-linked recessive trait, and red eye is an X-linked dominant trait. Assume that the flies have a diploid set of ...

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In humans, hemophilia is caused by a recessive allele on the X chromosome. Suppose a man with hemophilia has children with a hea
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Answer:

The answer is 50

Explanation:

Hemophilia is a X-linked disease. That means the recesive allele which causes the disease is not in Y chromosome, but only in X chromosome.  If we denote:

X⁺ : dominant allele

X⁻: recesive allele

Then, in a woman there are three posibilities:

X⁺X⁻: is a carrier woman (without hemophilia)

X⁺X⁺: healthy woman

X⁻X⁻: woman with hemophilia

But in a man there are two posibilities:

X⁺Y: healthy man

X⁻Y: man with hemophilia

A man with hemophilia is X⁻Y, and a healthy woman whose mother had hemophilia is a carrier woman (X⁺X⁻). If they have a child, there are 4 posibilities, and each one has 1/4 of occurrence probability:

X⁻Y  x  X⁺X⁻ = X⁻X⁺, X⁻X⁻, X⁺Y, YX⁻

Posibilities with hemophilia are X⁻X⁻ and YX⁻ (1/4 + 1/4= 1/2= 0.5= 50%)

In each filial, there is a 50 percent of probability of having a child (man or woman) with hemophilia.

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3 years ago
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