exam questions Flashcards
1
Q
what change would make a gene more likely to be transcribed?
A
increasing acetylation of histone proteins
2
Q
true or false, epigenetic changes can sometimes be reversed:
A
true
3
Q
true or false: if damaged DNA is detected at the G2 checkpoint, the cell cycle is halted & the cell tries to repair damage
A
true
4
Q
RNA nucleotides are activated by addition of phosphate groups from ….
A
ATP
5
Q
define “regulatory gene”
A
- makes repressor protein
- product switches gene on/off
6
Q
define ‘structural gene’
A
- makes polypeptide
- controlled by regulatory gene
7
Q
how have homeobox genes been used to study relationships between groups of organisms?
A
- highly conserved
- similarity in homeobox sequence indicates similarity in species
