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Question

If so pea plant with round and green seeds is bred with plant having wrinkled and yellow seeds how many different phenotypes will be observed in F2 generation list them and mention the ratio. Also specify the genotypes of the parents if we take R for round and r for wrinkled and G for green and g for yellow assuming round to be dominant over wrinkled and green over yellow.

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Solution

Round and green plant is dominant in both charecetrs. Its genotype will be RRGG.
Wrinkled and yellow plant will be recessive in both charecters.Its genotype will be rrgg.
When two such plants are crossed F1 generation will be RrGg.When two such plants are crossed, in the F2 generation,
we can observe 4 phenotypes.Round and green,round and yellow,wrinkled and gree, wrinkled and yellow in a ratio 9:3:3:1 respectivevly.

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