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Question

A homozygous tall pea plant with purple flowers was crossed with a short plant with white flowers and F2 generation was raised. What will be the proportion of tall plants and short plants in F2 generation? Explain.

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Solution

These type of crosses can be challenging to set up, and the square you create will be 4x4. This simple guide will walk you through the steps of solving a typical dihybrid cross common in genetics. The method can also work for any cross that involves two traits.
The phenotypic ration will be 9:3:3:1.
The tall trait is dominant and will express itself in the heterozygous condition also.



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