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shtirl [24]
3 years ago
5

What percentage of offspring from a cross between a homozygous type A parent with a heterozygous Type A parent is expected to co

ntain the I allele
a)100%

b)50%

c)75%

d)25%
Biology
1 answer:
snow_lady [41]3 years ago
8 0

The correct answer is option B, 50%

Let us take the following case:

Genotype of heterozygous parent - (Aa)

Genotype of homozygous parent – (aa)

Allele I  - (Aa)

Allele II – (aa)

The cross between the two is shown below:

Aa  X aa

Aa, Aa, aa, aa

There are 50 % Aa, and 50 % aa allele.  

Thus, the allele I (Aa) is 50 %.  

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