Homozygous question!

Embryonic lethal means that the fetus dies as an embryo.

I think it' pretty easy to assume that's what it means (what NdAppy said) by just looking at the context. I had never heard that before and I assumed that's what it meant.

Well I didn't really understand 100% what it meant either.

This is very true my friend who owns Spooks Gotta Whiz, tests him and his foals for this with every genetic panel testing.

I guess I should have asked my question differently. I assumed the embryonic lethal meant the fetus dies as an embryo, what I'd like to know is why and if there's a good website someone can refer me to in order to read up on it?