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Table 1 Possible expression states of allele sets in diploid genome

From: Advances in the identification and analysis of allele-specific expression

 

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

  1. 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).