When would a point mutation occur?

Biology

2 answers:

Inga [223]3 years ago

6 0

Answer:

Mutation occurs at random points in the bases of the DNA. Mutation happens during DNA replication either induced by environmental factors or through errors in mitosis and meiosis.

Explanation:

Point mutation is a change of one base pair in the DNA sequence. It is a result of a mistake during DNA replication. Causes of point mutation are either spontaneous mutation or exposure to radiation. It is usually not fatal. There are three types of point mutations: nonsense (mutation to premature stop codon), missense (mutation codes for a different amino acid), and silent (mutation codes for the same amino acid).

bija089 [108]3 years ago

5 0

Answer:

point mutation, change within a gene in which one base pair in the DNA sequence is altered. Point mutations are frequently the result of mistakes made during DNA replication, although modification of DNA, such as through exposure to X-rays or to ultraviolet radiation, also can induce point mutations.

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