HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mutations cannot be passed from generation to generation.
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Mutations are rare.
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Mutations are always harmful.
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Germline mutations occur in body cells.
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Most forms of cancer are caused by somatic mutations.
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Detailed explanation-1: -Answer; Mutations are rare. Most forms of cancer are caused by somatic mutations.
Detailed explanation-2: -Mutations can be inherited. Mutations eventually lead to evolution. Even a single nucleotide substitution can be termed mutation. Mutations can never be acquired from the environment.
Detailed explanation-3: -Answer and Explanation: The correct statement about somatic mutations is (e.) They cannot be inherited. A somatic mutation is an alternation in the normal sequencing of the genetic material in somatic cells.
Detailed explanation-4: -Answer and Explanation: The correct answer to this question is B. They always cause a change to an organism’s genotype. Regardless of the cause of the change, a DNA sequence is always altered when it mutates.
Detailed explanation-5: -Somatic mutations are a normal part of aging and occur throughout an organism’s life cycle either spontaneously as a result of errors in DNA repair mechanisms or a direct response to stress. Mutations occurring early in development can cause mosaicism within the gene line, impacting organism development.