Gene mutations Flashcards

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1
Q

A gene mutation is a

A

change in the sequence of base pairs in a DNA molecule that may result in an altered polypeptide
Mutations occur continuously

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2
Q

why can mutations in a gene can sometimes lead to a change in the polypeptide that the gene codes for,,,,,,,,

A

As the DNA base sequence determines the sequence of amino acids that make up a protein

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3
Q

Most mutations do not alter the polypeptide or only alter it slightly so that its structure or function is not changed
This is because the genetic code is

A

A single amino acid can be coded by more than one triplet

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4
Q

There are different ways that a mutation in the DNA base sequence can occur

A

Insertion of nucleotides

Deletion of nucleotides

Substitution of nucleotides

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5
Q
A
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