HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The allele for purple flowers is recessive to the allele for white flowers.
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The allele for purple flowers is dominant to the allele for white flowers.
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The allele for purple flowers has mutated more times than the allele for white flowers.
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The allele for purple flowers is on a different chromosome than the allele for white flowers.
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Detailed explanation-1: -The allele for purple flowers is dominant whereas allele for white flowers is recessive. Explanation: According to the question, Purple flower plant was crossed with white flower plant.
Detailed explanation-2: -Mendel noted that hybridizing true-breeding (P generation) plants gave rise to an F1 generation that showed only one trait of a characteristic. For example, a true-breeding purple-flowering plant crossed with a true-breeding white-flowering plant always gave rise to purple-flowered hybrid plants.
Detailed explanation-3: -Important Questions on Heredity and Evolution In a cross between plants with purple flowers and plants with white flowers, the offspring of F1 generation had all white flowers. When F1 generation individuals were self-bred, the F2 generation gave rise to 100 individuals, 75 of which had white flowers.
Detailed explanation-4: -From SP: Q1 = Purple flowers were only seen in the F1 generation because the purple gene was dominant and all of the offspring included that gene so they were purple.
Detailed explanation-5: -RESULTS Both purple-flowered plants and white-flowered plants appeared in the F2 generation. In Mendel’s experiment, 705 plants had purple flowers, and 224 had white flowers, a ratio of about 3 purple : 1 white. Each true-breeding plant of the parental generation has identical alleles, PP or pp.