GENERAL ANATOMY
INTRODUCTION TO GENERAL ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The pink flower hasincomplete dominant red and white genes.
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The genes for red color andwhite color do not affect each other.
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The pink flower only getsthe genes for color from one of the parent plants.
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The gene for pink color isin all flowers, but the genes for red and white color are only in some of theflowers.
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Detailed explanation-1: -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-2: -The allele for red flowers is incompletely dominant over the allele for white flowers. Red + white = pink. The results of a cross where the alleles are incompletely dominant can still be predicted, just as with complete dominant and recessive crosses.
Detailed explanation-3: -When a red flowered plant is crossed with a white flowered plant, ideally the offsprings should bear either red and white flower. However, in the case where the trait flower color exhibits incomplete dominance, all the offsprings will give forth pink colored flowers due to the blending of traits.
Detailed explanation-4: -In snapdragon, crossing pure red (RR) and pure white (rr) flowered plants produces pink (Rr) flowered plants. In this case the dominant allele ‘R’ is not completely dominant over the recessive allele ‘r’. This phenomenon is called incomplete dominance.
Detailed explanation-5: -When a red-flowered plant is crossed with a white-flowered plant, the F1 generation has pink flowers.