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dusya [7]
3 years ago
5

In humans, albinism (lack of pigment isn’t he skin and eyes and hair) is due to recessive gene. Suppose that a normally pigmente

d man and an albino woman produce an albino child. What are the chances of their second child also being albino? ( does anyone knows the answer to this question)
Biology
1 answer:
snow_lady [41]3 years ago
6 0

<u>Answer:</u>

<em>There are equal chances for the second child becoming albino and not becoming albino.</em>

<u>Explanation:</u><u> </u>

Albinism is due to the presence of a recessive gene. <em>Thus every individual should have two copies of this recessive gene in order to be an albino. </em>Recessive genes express only if they occur in pair.  

If not the dominant gene trait will be expressed in the organism. Here an albino woman is having children with a normally pigmented man. The cross can be represented as

<em>Let p represent the abnormal pigment gene in albino and P represent the gene for normal pigmentation.</em> The fact that the first child is albino suggests that the genotype of the man is Pp.  

Pp \times pp

Pp                               Pp                               pp                        pp

<em>Here there is equal probability for the child becoming and not becoming albino.Thus the probability that the second child also being albino is ½. </em>

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