My gut feeling says it does.

There are two essential element to being a channeler. You first need to have the right soul, and you have to have the right body. We also know that channeling is a genetic recessive.

So... Rand has babies with Elayne... will they be strong channelers or is it impossible to say?

I don't think you can easily prove any theory on this, but I tend to believe the 'Harry Potter' version, namely that power runs in certain families and is hereditary. My belief is based on this premise : Rand and Elayne will create babies that have the genes to channel. Considering Rand and Elayne are both homozygous carriers (they have to be to be active expressors of a genetic recessive), then most and if not all of their babies will have the genetic combination that allows channeling. Perhaps a small minority of their kids won't have the genes, or the soul, and won't channel "squibs", but the rest will.

As for strength, I think all their kids will be between Rand and Elayne in strength.

Do you think the same, or do you have other theories? There are many possibilities.... they might have some weak kids, or all the girls will be as strong as Elayne, or the boys as strong as Rand.

How do you think strength in the Power is expressed in the kids of channelers? Will Gawyn 'dilute' Egwene's genes and produce weaker channeling children?