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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A gene is perfectly copied and passed on to a child.
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There is a mis-copy in a gene passed onto a child making the child’s genes different from the parents.
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A chromosome divides, making a copy
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A cat walks on six toes instead of five.
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Detailed explanation-1: -Germline mutations. It passes directly from a parent to a child at the time of conception. As the embryo grows into a baby, the mutation from the initial sperm or egg cell is copied into every cell within the body. Because the mutation affects reproductive cells, it can pass from generation to generation.
Detailed explanation-2: -Listen to pronunciation. (MIS-sens myoo-TAY-shun) A genetic alteration in which a single base pair substitution alters the genetic code in a way that produces an amino acid that is different from the usual amino acid at that position.
Detailed explanation-3: -Germ-line mutations occur in reproductive cells (sperm or eggs) and are passed to an organism’s offspring during sexual reproduction. Somatic mutations occur in non-reproductive cells; they are passed to daughter cells during mitosis but not to offspring during sexual reproduction.
Detailed explanation-4: -Mutations can be of many types, such as substitution, deletion, insertion, and translocation.