Control of Gene Expression Flashcards Preview

Mrs W A level Biology > Control of Gene Expression > Flashcards

Flashcards in Control of Gene Expression Deck (4)
Loading flashcards...
1

When might gene mutations take place?

During DNA replication.

DNA is vulnerable as it is single stranded.
Mistakes may take place in replication.

2

What happens in an addition gene mutation?

An extra nucleotide/base is added.

Causes a frame shift.

3

What happens in a deletion gene mutation?

A nucleotide/bade is removed.

Causes a frame shift.

4

What happens in a substitution gene mutation?

A nucleotide/base is removed and another put in its place.

Does not cause a frame shift.