Question

give two different examples of how the following can occur: a. a point mutation in an exon that is silent. b. a point mutation in an exon that is not silent. c. a point mutation in an intron that is not silent. d. a point mutation in a promoter that is not silent.

Answer 1

Point mutations can show three different types of effects:

• Base substitutions can be silent mutations in which the changed codons correspond to the same amino acid.
• Base substitutions can be missense mutations where the changed codon corresponds to a different amino acid.
• Base substitutions can be nonsense mutations in which the altered codon corresponds to the stop signal.

What are point mutations?

Point mutations are changes to the N base of DNA or RNA. Point mutations are common, but their effects can be mitigated by gene recovery mechanisms.

The cause of this point mutation is due to 4 factors:

1. Errors during DNA replication by mutagens.
2. Breaking of oxygen-phosphate bonds.
3. Substitution of base pairs.
4. Changes in the number of bases.

Learn more about point mutations here brainly.com/question/1168174

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