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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When DNA is mutated, it shows immediately in your body
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When DNA is mutated, the cell immediately dies
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When DNA is mutated, our cells can fix the mutation
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Detailed explanation-1: -Most of the types of DNA damage that are caused by chemical or physical mutagens (Section 14.1. 1) can only be repaired by excision of the damaged nucleotide followed by resynthesis of a new stretch of DNA, as shown in Figure 14.18B.
Detailed explanation-2: -Genetic mutations are changes to your DNA sequence that happen during cell division when your cells make copies of themselves. Your DNA tells your body how to form and function. Genetic mutations could lead to genetic conditions like cancer, or they could help humans better adapt to their environment over time.
Detailed explanation-3: -Mutations are the random changes in genetic material of organisms leading to genetic diversity.
Detailed explanation-4: -Which of the following is true about DNA mutations? Mutations can spontaneously occur during DNA replication.