Genes

The way genes are passed down from parent to child is a bit different when it comes to secondary genders. It is three times more likely for a parent to pass down whichever genes are the more dominant one (beta->alpha->omega).

For an example, say you have a dominant beta. The beta would have an alpha gene and a beta gene, and beta tends to be dominant over any other secondary gender. That means there is a 75% chance of them passing down beta genes. So if the beta has a child with another dominant beta the chance of the two of them having a true alpha is only 6.25%. The chance of them having a true beta would be 56.25%. The remaining 37.5% encompasses both dominant betas and neutral alphas.

For two neutral alphas, even thought they present as alphas, their chances of having a true alpha child would be very close to, if not just a bit higher than for two dominant betas.

Sub alphas, however, would be more likely to pass on alpha genes and thus should have a much higher chance of having a true alpha child.

Generally, the alpha gene tends to be dominant over omega and the beta gene tends to be dominant over both alpha and omega, but the tendencies aren't very exaggerated.