OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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which of the following does not result in inheritable genetic variation?
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crossing over
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sexual reproduction
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mutations in body cells
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environmental factors
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Explanation:
Detailed explanation-1: -Non-inherited variants occur at some time during a person’s life and are present only in certain cells, not in every cell in the body. Because non-inherited variants typically occur in somatic cells (cells other than sperm and egg cells), they are often referred to as somatic variants.
Detailed explanation-2: -In part, this is because mutations in body cells do not affect the DNA in eggs and sperm. While this prevents many damaging mutations from dooming offspring, it also reduces diversity and the potential for adaptation to changing environments.
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