Gene Expression Flashcards
1
Q
Universal
A
DNA triplets code for the same amino acids in all organisms
2
Q
Non overlapping
A
Each base is read once in a triplet
3
Q
Degenerate
A
More than one triplet codes for each amino acid
4
Q
3 types of mutagenic agents and examples and what they do
A
- High energy radiation which damage DNA molecule and chemicals alter DNA structure/ effect DNA replication= x rats, gamma rays
- DNA reactive chemicals= nitrous oxide removes a NH2 from cytosine converting it into uracil
- Biological Agents = Viruses and bacteria
5
Q
Stem cell definition
A
They are undifferentiate that can divide into any type of cell continually and become specialised
6
Q
4 types of stem cells
A
Pluripotent
Totipotent
Multipotent
Unipotent
