Changing the code through mutuations

Question 1

What is a mutation

Answer 1

Spontaneous change in DNA sequence caused by mutagens

Question 2

What causes mutations

Answer 2

Some mutations happen
naturally. Some mutations are the result
of damage caused by chemicals,
radiation or other factors such as smoking or drinking. These are called Mutagens

Question 3

eg of mutagens

Answer 3

ciggarettes, alcohol, durgs

Question 4

what are the two types of mutations

Answer 4

Point mutation
CHromsome mutation

Question 5

when does Point mutation occur

Answer 5

Point mutations occur when a
nucleotide is altered, added, or
deleted. This can lead to changes in
the amino acid sequence in a protein.

Question 6

what are the two types of poimt mutation

Answer 6

substitution - Substitution affects only one
nucleotide, eg a T is replaced by an A.
Frameshift- are insertions or deletions of nucleotides in DNA that change the reading
frame