>> 8) Any mention of dgl should be changed to esg
>is this because they are now allelic?  If they are distinct but adjacent,
>surely I should either change x << dgl to esg, or change dgl << x to esg,
>but not both.  If they are allelic, have you a reference?
esg is complex. Some alleles complement each other. But dgl (=T(Y;2)J165)
is an esg allele by any criterion - it just took me a long time to
discover. Ref - me, I guess!