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Question

Two pink flowered Snapdragon plants (Rr) are self pollinated. Probability of offspring having white flowers is ________.

A
25%
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B
50%
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C
75%
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D
2.5%
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E
7.5%.
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Solution

The correct option is A 25%

A red flowered Snapdragon(RR) is crossed to white flowered Snapdragon(rr). The F1 individuals are Pink flowered(Rr). When F1 individuals are self crossed, in the F2 generation, 1 plant with red flowers(RR-25%), 2 plants with pink flowers(Rr-50%), 1 plant is with white flowers(rr-25%) are formed. The phenotypic ratio is 1:2:1 and genotypic ration is 1:2:1.

So, the correct option is ‘25%’.
1144754_688498_ans_2e5e0b35edf8488aa6f6351f1d3320c3.jpg

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