L22A
L22B
46.1 Both asexual and sexual reptoduction occur in the animal kingdom
46.2 Gertilization depends on mechanisms that bring together sperm and 
       eggs of the same species
46.3 Reproductive organs produce and transport gametes 
46.4 The timing and pattern of meiosis in mammals differ for males and 
       females
46.5 The interplay of tropic and sex hormones regulates mammalian 
       reproduction
46.6 In placental mammals, an embryo developes gully within the mother's
       uterus