Yes and no. Which I know is a super frustrating answer to get, because it's not really an answer. Genes are complicated, but we've made a lot of progress toward full understanding. It's kind of like putting together a jigsaw puzzle with all the pieces upside down. It would be easier if you could see the picture, but it's still possible. Just difficult.
no subject
Does absolute unit mean really big?
[ She is guessing from context. ]