HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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when one or very few nitrogen bases are involved
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when deletions are involved only
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when insertions are involved only
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when one section of the chromosome is involved
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Detailed explanation-1: -A point mutation occurs in a genome when a single base pair is added, deleted or changed. While most point mutations are benign, they can also have various functional consequences, including changes in gene expression or alterations in encoded proteins.
Detailed explanation-2: -What Can Cause a Point Mutation? A point mutation can develop when a double stranded DNA molecule creates two separate single strands. In addition, radiation and chemical reactions can result in a point mutation when the reactions are severe enough.
Detailed explanation-3: -Point Mutations A point mutation-the change of a single nitrogen base in a DNA sequence-is usually the least harmful type of DNA mutation.
Detailed explanation-4: -A point mutation is a mutation involving only a single nucleotide nucleic acid. Most generally, point mutations include the substitution of one base for another (which often affects the complimentary basis in DNA). >
Detailed explanation-5: -point mutation, change within a gene in which one base pair in the DNA sequence is altered.