MUTATIONS

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What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

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What is a substitution mutation?

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A substitution mutation occurs when one nucleotide is replaced by another in the DNA sequence.

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What is a frameshift mutation?

Back

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

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What is a deletion mutation?

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

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What is an insertion mutation?

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

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What is a point mutation?

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A point mutation is a type of mutation where only one nucleotide is altered.

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What is nondisjunction?

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Nondisjunction is a chromosomal mutation that occurs when chromosomes fail to separate properly during cell division.

Front

What are the effects of mutations on proteins?

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Mutations can lead to changes in protein structure and function, potentially resulting in diseases or altered traits.

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What is the difference between a gene mutation and a chromosomal mutation?

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Gene mutations affect individual genes, while chromosomal mutations affect the structure or number of chromosomes.

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What is the role of mutagens?

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Mutagens are agents that increase the rate of mutations, such as chemicals or radiation.