Likewise, the egg that came from the female parent contains 23 chromosomes, a haploid number in the nucleus. And when these two cells, the sperm and our egg, fuse, the number of chromosomes is restored. 23 plus 23 gives us 46, a deployed number of chromosomes. What fertilization also does is it activates the egg, it transforms the egg into the zygote. And this begins several processes, metabolic processes, that eventually lead to and initiate embryological development, as we'll see in the next several lectures. Now, let's actually discuss and focus on the process of fertilization and how it actually takes place.