1
Question
Which cross yields red, white and pink flowers variety of dog flower?
Which cross yields red, white and pink flowers variety of dog flower?
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Solution
The correct option is B Rr × Rr
The F1-hybrid plants have a different phenotype (pink flowers) than either of the true-breeding parents. This is an example of incomplete dominance. When the F1-hybrid plants are self-fertilized, both parental phenotypes (red flowered plants and white flowered plants) reappear in the F2 generation. F1 parents - RR (red) x rr ( white ) F1 individual Rr ( pink ) selfing of F1 Rr x Rr result i.e., F2 1 ( red ): 2 (pink ): 1 (white)Thus, the correct answer is option C.
The F1-hybrid plants have a different phenotype (pink flowers) than either of the true-breeding parents. This is an example of incomplete dominance. When the F1-hybrid plants are self-fertilized, both parental phenotypes (red flowered plants and white flowered plants) reappear in the F2 generation.
F1 parents - RR (red) x rr ( white )
F1 individual Rr ( pink )
selfing of F1 Rr x Rr
result i.e., F2 1 ( red ): 2 (pink ): 1 (white)
Thus, the correct answer is option C.
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