What's the expression for $\alpha_m$ in case of male-heterogametic XY systems (G+)?
Derive the corresponding $\alpha_m$ expression of for (sic) male-heterogametic XY systems (G++)
I have absolutely no idea what they mean with G+ and G++ in the exercises. I have searched the whole Internet and the lecture slides for this but I think I am going crazy. Has it something to do with the gametes? Anyone who knows? Thanks in advance!