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What are the combination of characters...

What are the combination of characters in the `F_(2)` progeny ? What are their ratios?

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When `F_(1)` generation dihybrid parts are crossed with each other, the characters segregate to produce new combination. The cross can be shown as:

(i) Round yellow -9 (ii) Round green - 3
(iii) Wrinkled yellow -3 (iv) Wrinkled green-1
Ratio will be : 9:3:3:1
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