HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sections of genes can be removed.
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Sections of genes may be added.
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All of the organism’s genes are removed.
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An entire gene may be reversed.
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Detailed explanation-1: -Definition. A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.
Detailed explanation-2: -There are four possible results from a mutation: missense, nonsense, sense, or frameshift.
Detailed explanation-3: -Infrared rays do not cause mutation, hence it will be the correct option.
Detailed explanation-4: -These genetic changes are not present in a parent’s egg or sperm cells, or in the fertilized egg, but happen a bit later when the embryo includes several cells. As all the cells divide during growth and development, cells that arise from the cell with the altered gene will have the mutation, while other cells will not.