GRSex and ERSex clause with H not G samples

[dcarver1]

Small issues we found for one species that has multiple G collections but no H Collections

in GRSexsitu code
line 23: the statement test for non zero number of H points. Should this not test for G points? All the subsequent analysis relates to the number of g points.

Same is true of line 25 in the ERSexsitu code.

Any reason why this clause is written as it is?