Mutation

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to alterations in gene function or expression.

Front

What are the two main types of mutations?

Back

The two main types of mutations are point mutations (which affect a single nucleotide) and frameshift mutations (which involve insertions or deletions of nucleotides).

Front

What is a frameshift mutation?

Back

A frameshift mutation occurs when nucleotides are inserted or deleted from the DNA sequence, altering the reading frame of the gene.

Front

What is a point mutation?

Back

A point mutation is a change in a single nucleotide in the DNA sequence, which can be a substitution, insertion, or deletion.

Front

What is a substitution mutation?

Back

A substitution mutation occurs when one nucleotide is replaced by another, potentially altering the amino acid sequence of a protein.

Front

What is a deletion mutation?

Back

A deletion mutation occurs when one or more nucleotides are removed from the DNA sequence.

Front

What is an insertion mutation?

Back

An insertion mutation occurs when one or more nucleotides are added to the DNA sequence.

Front

What is a chromosomal mutation?

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A chromosomal mutation involves changes to the structure or number of chromosomes, which can have significant effects on an organism.

Front

What is the most impactful type of mutation?

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Chromosomal mutations are often the most impactful type of mutation due to their potential to affect many genes.

Front

What is the effect of a nucleotide deletion?

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A nucleotide deletion can lead to a frameshift mutation, altering the entire downstream amino acid sequence.