In case that spurs the new colonists to find a workaround, the virus will also code the zygotes’ adrenal glands to produce excessive amounts of testosterone over their lifetimes, influencing their amygdalae to turn them aggressive. I’ve done the same to the yaks they’ll raise—predisposed them to become killers.
Gotta say, I think it would take more than testosterone to make Yarrow how he is
