GI: Mutations Flashcards Preview

AS/A-Level Biology > GI: Mutations > Flashcards

Flashcards in GI: Mutations Deck (4)
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1
Q

What do gene mutations involve?

A

Changes in the DNA base sequence of chromosomes.

2
Q

What does the degenerate nature of DNA mean?

A

Some amino acids are coded for by more than on DNA triplet, so not all substitutions will result in a change to amino acid sequences.

3
Q

Will deletions always result in a change to the amino acid sequence?

A

Yes, it will cause a shift in all following base triplets.

4
Q

What increase the rate of mutation?

A

Mutagenic agents, eg. ultraviolet radiation, ionising radiation, chemicals and some viruses.

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