Affects of Mutations

Question 1

what is a mutation?

Answer 1

• change to the base sequence of DNA

Question 2

what could be the affects of a mutation?

Answer 2

• no change to amino acid sequence
• change to a single amino acid sequence
• change to sequence of many amino acids

Question 3

what happens when there is no change to amino acid sequence?

Answer 3

• amino acids are coded for by more than one triplet a DNA
• DNA is degenerate

Question 4

what happens when there is a single change to amino acid sequence?

Answer 4

• changes one DNA triplet
• changes the translation of one amino acid
• change the primary (1*) structure of the polypeptide
• change the hydrogen/iconic bonding
• change the tertiary (3*) of the protein

Question 5

what happens when there are many changes to amino acid sequence?

Answer 5

• frame shift changes to sequence of all the following DNA triplets
• changes all the flowing amino acids in sequence
• changes to the primary structure
• changes the hydrogen/iconic bonding
• changes 3* structure
• can be caused by insertion or deletion