Topic 20: Regulation of gene expression Flashcards
1
Q
A
2
Q
What is degenerate code in genetics?
A
Some amino acids have more than one code word coding for them
3
Q
What is a codon?
A
A triplet of three consecutive nucleotides that code for one amino acid
4
Q
What does substitution refer to in a nucleotide sequence?
A
A nucleotide in a sequence has been substituted with another
5
Q
What is deletion in the context of nucleotide sequences?
A
A nucleotide in a sequence has been removed from the sequence
6
Q
What can be the three consequences of base substitution
A
- The new codon now codes for a stop codon
- The new codon now codes for a different amino acid
- The new codon now codes for the same amino acid (because the genetic code is degenerate)
7
Q
What type of mutation causes frame shift
A
Base deletion / insertion
8
Q
A
