DNA Mutations DL

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What is a DNA mutation?

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A DNA mutation is a change in the nucleotide sequence of an organism's DNA, which 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 is a type of mutation where one nucleotide is replaced by another, potentially altering the amino acid sequence of a protein.

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What is a frameshift mutation?

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A frameshift mutation occurs when nucleotides are inserted or deleted from the DNA sequence, causing a shift in the reading frame of the genetic code.

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What is a nonsense mutation?

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A nonsense mutation is a type of substitution mutation that creates a stop codon, leading to premature termination of protein synthesis.

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What is a silent mutation?

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A silent mutation is a change in the DNA sequence that does not alter the amino acid sequence of the resulting protein.

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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, which can disrupt the reading frame.

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What is a deletion mutation?

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A deletion mutation is the removal of one or more nucleotides from the DNA sequence, which can also cause a frameshift.

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What is a missense mutation?

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A missense mutation is a type of substitution mutation that results in the coding of a different amino acid, potentially affecting protein function.

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What are the potential effects of mutations on proteins?

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Mutations can lead to changes in protein structure and function, which may result in beneficial, harmful, or neutral effects on the organism.

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How do mutations contribute to evolution?

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Mutations introduce genetic variation, which can be acted upon by natural selection, leading to evolutionary changes in populations.