HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0 RR; 0 Rr:4 rr
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2 RR; 0 Rr:2 rr
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4 RR; 0 Rr:0 rr
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0 RR; 2 Rr:2 rr
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Detailed explanation-1: -When red flowered plants are crossed with white flowered plants, the F2 generation gives a ratio of 3:1.
Detailed explanation-2: -In certain flowers, color is inherited by alleles that show incomplete dominance. In such flowers, a cross between a homozygous red flower (RR) and a homozygous white flower (WW) always results in a heterozygous pink flower (WR).
Detailed explanation-3: -The cross of red heterozygote with its white recessive parent the ratio will be 1:1 in monohybrid condition.
Detailed explanation-4: -The crossing of a red flowered plant and a white flowered plant produces all the offspring with pink flowers. This cross illustrates red and white exhibit incomplete dominance. This situation occurs due to the blending of both the alleles.
Detailed explanation-5: -When a tall and red-flowered plant is crossed with a dwarf and white-flowered plant, the phenotype in the progeny is dwarf and white.