epigenetics Flashcards
(4 cards)
1
Q
what is an epigenome
A
all of the chemical modifications to all histone proteins and DNA in an organism
2
Q
what is epigenetics
A
changes in gene function without changes to base sequence of DNA
3
Q
epistasis in eukaryotes
A
the nucleus is wrapped around histones
histone proteins can be chemically modified through adding acetyl
DNA can also be chemically modified through adding methyl groups without changing the base sequence
4
Q
what are changes to the epigenome caused by
A
changes in the environment like smoking stress exercise and diet
internal signalling from the bodys own cells
