PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pea color and pea shape display independent inheritance patterns.
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Offspring of a given cross show all possible combinations of traits in equal proportions.
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Most offspring of a given cross have a combination of traits that is identical to that of either one parent or the other.
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Recessive phenotypes can skip a generation, showing up only in the parental and F2 generations.
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Detailed explanation-1: -Which of the following observations about inheritance in pea plants could be explained only after the discovery that genes may be linked on a chromosome? Most offspring of a given cross have a combination of traits that is identical to that of either one parent or the other.
Detailed explanation-2: -In this famous experiment, Mendel purposefully cross-pollinated pea plants based on their different features to make important discoveries on how traits are inherited between generations.
Detailed explanation-3: -Peas were a good model system, because he could easily control their fertilization by transferring pollen with a small paintbrush. This pollen could come from the same flower (self-fertilization), or it could come from another plant’s flowers (cross-fertilization).