8.4 Flashcards
1
Q
What is a codon?
A
3 consecutive nucleotides that codes for an amino acid
2
Q
What are the 3 types of point mutation?
A
Silent/synonymous, missense, nonsense
3
Q
Describe what happens in a frame shift mutation?
A
a nucleotide is either removed or added, which shifts the whole pattern of codons
4
Q
What is a nonsense mutation?
A
It transforms a codon into a stop codon, so it ends short.
5
Q
What does the tRNA do?
A
It uses an anticodon to attach to a codon and adds an amino acid
6
Q
What is the start codon?
A
AUG (Methionine)
7
Q
What are the 3 ways a mutation can occur?
A
DNA Replication, Radiation and chemicals, Viral Infections
8
Q
What is a missense mutation?
A
It changes just one codon and one amino acid.
9
Q
What happens at the A site in Translation?
A
tRNA matches with codons
10
Q
A
