Embryo Appropriation genetic quirks

I have the general framework set up as discussed in !10879 (merged), but there are a few questions before it'll be ready.

1. Currently, I have set a 50% chance for one of the goodTrait genetic quirks (except wellHung, as this slave is always XX) to be generated, and the odds set equal between them. Should these odds be changed, or a different method used?

2. Could the section blocking the 'bad' genetic quirks be condensed into a for loop or something?

3. What needs to be done to set the slave's heterochromic eye color properly outside of generateNewSlave?