DNA Mutations

Front

What is a point mutation?

Back

A point mutation is a change in a single nucleotide in the DNA sequence.

Front

What are the types of point mutations?

Back

The main types of point mutations are missense, nonsense, silent, and neutral mutations.

Front

What is a missense mutation?

Back

A missense mutation is a point mutation that results in a different amino acid being incorporated into a protein.

Front

What is a nonsense mutation?

Back

A nonsense mutation is a point mutation that creates a premature stop codon in the protein sequence.

Front

What is a silent mutation?

Back

A silent mutation is a point mutation that does not change the amino acid sequence of a protein.

Front

What is a neutral mutation?

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A neutral mutation is a mutation that does not have a significant effect on the organism's fitness.

Front

How many nucleotides are involved in a point mutation?

Back

A point mutation involves a change in 1 nucleotide.

Front

What is an insertion mutation?

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An insertion mutation is the addition of one or more nucleotides into a DNA sequence.

Front

What is a deletion mutation?

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A deletion mutation is the loss of one or more nucleotides from a DNA sequence.

Front

What is a frameshift mutation?

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A frameshift mutation occurs when nucleotides are inserted or deleted, altering the reading frame of the genetic code.