|
Expression states
|
---|
|
Non-ASE
|
ASEi/xi
|
ASEΔ
|
---|
Allele
|
1
|
2
|
3
|
4
|
5
|
---|
A
|
On
|
Off
|
On
|
Off
|
Δ
|
a
|
On
|
Off
|
Off
|
On
|
Δ
|
- Expression states 1 and 2 refer to alleles that do not display allele-specific expression (ASE). Expression states 3 and 4 refer to alleles that do display ASE, for example, due to imprinting (ASEi) and X-inactivation (ASExi). Expression state 5 refers to alleles that display differential ASE (ASEΔ), due to currently unknown mechanism(s).