Gene mutations

Question 1

A gene mutation is a

Answer 1

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

Question 2

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

Answer 2

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

Question 3

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

Answer 3

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

Question 4

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

Answer 4

Insertion of nucleotides

Deletion of nucleotides

Substitution of nucleotides