i love the science in all of the novels so far. i'm in the biotech/biodefense industry and this stuff is right up my alley. everytime he says "spore" or "blastocyst" i go "eep!" and get all 'cited cause i'm nerdy like that. and he gets it all in the right order, too, i love that. all of the gene sequencing and mitosis and embryonic development in ancestor was geek heaven.
although i still have to see how those monsters in nocturnal have managed to live such long lives, so we'll see about this
the only thing that ever bothered me was the description of the ancestor having a crocodile snout. since, its the ancestor of mammals, not reptiles.
otherwise, 6 thumbs up!