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Illusion [34]
4 years ago
11

A child is born to a couple, one of whom is heterozygous for an autosomal dominant disease. the other parent is homozygous norma

l. what would be the child's chances of having the disease?

Biology
1 answer:
Andru [333]4 years ago
3 0

Let 'C' denote the autosome with the dominant gene and 'c' denote the normal gene. The genotype of the parent who is heterozyzous for the autosomal dominant disorder will be, Cc. The parent who is homozygous for the normal gene will have the 'cc' genotype. The cross between the two parents will lead to two copies of the Cc and cc genotypes (shown in the image). The progeny with the 'Cc' genotype will be affected with the disorder. The probability of getting the disorder turn out to be, 50% (2 out of 4).  

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Answer:

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3 years ago
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Answer:

D)<12.5%

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3 years ago
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alex41 [277]
<span>I'm assuming this in plants.

Brief-ish answer:

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Here's a fuller answer:

"</span>Fertilization occurs after pollination, when pollen grains land on the stigma of a flower of the same species. During this time, a series of events take place leading to the formation of seeds. A pollen grain on the stigma develops a tiny tube that runs down the style of the ovary. The pollen tube contains a male gamete which meets the female gamete in the ovule. Fertilization occurs when the two gametes combine and their chromosomes join. The resulting product is a normal complement of chromosomes, with some from either parent flower. The fertilized ovule forms a seed, which consists of a food reservoir and an embryo that later develops into a new plant. In gymnosperms (conifers) male gametes are enclosed in pollen grains and are transmitted by wind or insects to the female reproductive organs. Fertilization in angiosperms (flowering plants) occurs when insects or other animals transport the pollen to the female reproductive organ (pistil).<span>
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source: </span>https://www.reference.com/science/plant-fertilization-occur-ccf48c80e72fc410
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