THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is an example of a beneficial mutation?
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When an organism’s lifespan becomes shorter.
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When an organism becomes unable to reproduce.
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When an organism’s body becomes deformed.
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When an organism develops immunity to a disease.
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Explanation:
Detailed explanation-1: -Examples of beneficial mutations in humans include: Mutations protecting humans from developing atherosclerosis (a dangerous build-up of fatty material in the blood vessels) Mutations in red blood cell genes have shown to provide up to 40% better protection against a severe form of malaria.
Detailed explanation-2: -Beneficial Mutations Some mutations have a positive effect on the organism in which they occur. They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur.
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