PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How does meiosis most benefit a species?
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it increases mutations
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it increases genetic variation
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it decreases the number of chromosomes an organism will receive
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it increases the number of chromosomes an organism will receive
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Explanation:
Detailed explanation-1: -Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.
Detailed explanation-2: -Mitosis builds a person with an identical set of chromosomes in every cell. And meiosis generates reproductive cells with new combinations of gene variations. Chromosomes are sometimes gained, lost, or rearranged during meiosis and fertilization, causing people to have genetic disorders.
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