Kinda? It’s not really about stages. It’s just granularity of selection, period. For example, 1-stage chromosome selection, separately on two people’s gametes, is more powerful than 2- or 3-stage iterated embryo selection with realistic numbers, probably.
I wouldn’t call that ‘1-stage’ because I’d see that as two stages: one stage to select the sperm, and one stage to select the egg, and then the output is the joint result. (And then you could tack on additional stages, like IES, pushing further out into the tail compared to any of the individual stages.)
Kinda? It’s not really about stages. It’s just granularity of selection, period. For example, 1-stage chromosome selection, separately on two people’s gametes, is more powerful than 2- or 3-stage iterated embryo selection with realistic numbers, probably.
I wouldn’t call that ‘1-stage’ because I’d see that as two stages: one stage to select the sperm, and one stage to select the egg, and then the output is the joint result. (And then you could tack on additional stages, like IES, pushing further out into the tail compared to any of the individual stages.)