Movie question

That is an interesting question. Maybe thats how MUTOs survived, and kept a population. 

I know this is a bit straight forward but the animals wouldn't care for incest, I know, weird, but still, it wouldn't matter to them.

Like evan said, Many animals don't care

i imagine it was a seperate cluster of eggs. the female muto only had one cluster at the end of the movie which means one cluster per muto family. so a second pair of mutos must have laid the second cluster after the first pair

DinoBoy the ones in the cave where individual egg's not cerslust

Well, maybe the others were devoured by other post-evolutionary mega-fauna, or the others hatched, or the others died out for unknwon reasons. Or maybe those things weren't eggs at all, but infants that had become spores inside of a host to feed and/or hibernate. It could be that separate infant individuals of different genetic lineages made their way to the same host body. Or they were just siblings but it didn't matter :P