In a typical monohybrid cross the …

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In a typical monohybrid cross the F2 population ratio is written as 3:1 for phenotype but expressed as 1:2:1 for genotype explain with the help of an example

Posted by Abirami A 3 years, 6 months ago

CBSE > Class 12 > Biology

1 answers

Sia ? 3 years, 6 months ago

In a monohybrid cross, when a pure line tall is crossed with a pure line dwarf, the following ratios are produced:

The phenotypic ratio 3: 1 represents that 3/4th of F₂ plants are tall whereas $\frac{1}{4}$ th plants are dwarf.
The genotypic ratio 1: 2: 1 represents 1 true-breeding dominant, 2 heterozygous dominant and 1 true-breeding recessive progeny.

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