epigenetics Flashcards
1
Q
what is epigenetics
A
study of how gene activity can be controlled without changing dna sequence and regulates genes without affecting sequence but just changes how its read
2
Q
what is epigenetic regulation
A
turns genes on and off
3
Q
name 3 epigenetic factors
A
chemical tags attached to dna
alteration to histones
alteration of regulatory RNAs
4
Q
what is the role of dna methylation
A
works by adding chemical group to ‘tag’ the dna which attached to cytosine and affects whether gene is switched on or off
5
Q
give 3 environmental epigenetic factors
A
smoking
stress
exercise
6
Q
give 3 heredity genetic tags
A
toxic chemicals
diet
disease
