Lesson 18: There's a pregnancy book with a mistake

Long story short, I'm writing a book with a knocked up main character and because I'm neurotic I want it to be as correct as possible. So when I see a cheaper book that's not in a bookstore I buy it and then highlight it an everything. I got this new one Friday and I was reading it today and it says the mother and mate (yes, it used the word "mate") each contribute 46 chromosomes to the baby. That's not true though, it's 23. Just so you're all aware.