Q.

In snapdragon, the flower colour is shown as RR genotype for Red, Rr for Pink and rr for White. What are the predicted phenotypes for the offspring from the cross between a pink flowered plant and white  flowered plant?

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a

100% pink flowered plants

b

25% red flowered plants, 50% pink flowered plants and 25% white flowered plants.

c

50% pink flowered plants and 50% white flowered plants.

d

50% red flowered plants and 50% pink flowered plants.

answer is C.

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Detailed Solution

When a pink flowered plant (Rr) is crossed with white flowered plant (rr), then we can get half of the progenies having pink flowered plants and the other half having white flowered plants. 

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