Animal Development Chapter 44. Fertilization The union of sperm and egg to form a zygote. It requires three main events occur.
Animal Development Chapter 47. Slide 2 of 13 Post-fertilization After fertilization, embryology occurs Embryology is the development of the zygote.
Animal development Chapter 37. Direct and Indirect Development Direct Development People and other mammals – as well as birds and reptiles – are all born.
Chapter 47 Animal Development
Animal Development Chapter 47. WHAT’S NEXT? Once copulation ends…
