Control Of Gene Expression Flashcards
1
Q
what are housekeeping genes?
A
genes which are switched on at all times
2
Q
what are tissue-specific genes?
A
a gene which has a function specific to a certain cell/tissue type.
3
Q
how is haemoglobin A1 gene a tissue-specific gene?
A
- only switched nn after birth.
- In adults, output from gene fairly low level - maintenance level.
4
Q
how is dna packaged around histones when inactive?
A
- densly packaged.
5
Q
what does euchromatin mean?
A
active
6
Q
what does heterochromatin mean?
A
silent
