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Monohybrid cross

What will be ...

Question

What will be the ratio of tall and dwarf plants in the F2 generation when a homozygous tall plant is crossed with homozygous dwarf plant?

A

3:1

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B

2:1

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C

1:2:1

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D

1:1

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Solution

The correct option is C
1:2:1

In the F2 generation of a typical monohybrid cross, we get homozygous and heterozygous combinations. These combinations appear in the following ratio
1(homozygous dominant): 2(heterozygotes):1 (homozygous recessive).
The combinations for the given example will be as follows:

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