Added new term 'gene expression amount'

[ar-ibrahim]

• issue EFO-OBA mapping (gene expression measurement) #223

[matentzn]

I am not opposed to this just note that there is quite some weird resistance on the subject of wether "amount of gene expression" is really a trait in the strict sense, but don't let that hold you up.

[rays22]

I am not opposed to this just note that there is quite some weird resistance on the subject of wether "amount of gene expression" is really a trait in the strict sense, but don't let that hold you up.

@ar-ibrahim , @matentzn
Do we want this 'gene expression amount' as a grouping category? It does not look like a true trait to me. However, if you want to group gene expression traits, for example 'tumor necrosis factor alpha gene expression' than it is fine.

• For the specific traits, like ' tumor necrosis factor alpha gene expression', I think we need a new pattern template:

'process quality' and ('characteristic of' some ('gene expression' has participant some %s))

[rays22]

I suggest we use PATO:0001236 process quality, because I think that is the relevant trait being observed/assessed when they measure gene expression rate of output.