GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are both dominant and recessive
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They have incomplete dominance
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They have codominance.
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None of the above
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Detailed explanation-1: -All (100%) of the offspring from the cross of a homozygous red-flowered plant with a homozygous white-flowered plant will have red flowers. We are told that the red flower is coded by the dominant allele.
Detailed explanation-2: -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-3: -Figure 21: A cross between a red and white snapdragon will yield 100% pink offspring. This pattern of inheritance is described as incomplete dominance, meaning that neither of the alleles is completely dominant over the other: both alleles can be seen at the same time.
Detailed explanation-4: -When a homozygous red flowered pea plant is crossed with homozygous white flowered pea plant, all offspring’s will be red flowered.