26. Gene and Chromosomal Mutations

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What is a Point Mutation?

Back

A type of mutation where a single nucleotide is substituted for another, potentially altering one amino acid in a protein.

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What is a Frameshift Mutation?

Back

A mutation that occurs when a nucleotide base is inserted or deleted, shifting the entire DNA sequence and changing the entire protein.

Front

What is an Inversion Mutation?

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A mutation where a part of a chromosome is reversed, which can affect gene expression.

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What is a Silent Mutation?

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A mutation that does not change the amino acid sequence of a protein, often occurring in non-coding regions or resulting in the same amino acid being produced.

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What is a Substitution Mutation?

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A mutation where one nucleotide is replaced by another, which may or may not affect the protein produced.

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What is a Deletion Mutation?

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A mutation that involves the loss of a nucleotide or a segment of DNA, which can lead to a frameshift.

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What is Translocation in genetics?

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A mutation where a segment of DNA is moved from one location to another, which can disrupt gene function.

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What is the effect of a Stop Codon mutation?

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A mutation that introduces a stop codon prematurely, leading to incomplete protein synthesis.

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What is the difference between a Missense Mutation and a Nonsense Mutation?

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A Missense Mutation results in a different amino acid being incorporated into a protein, while a Nonsense Mutation creates a premature stop codon.

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How can mutations affect protein function?

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Mutations can alter the amino acid sequence, potentially changing the protein's structure and function, leading to loss of function or gain of new functions.