In almost every religion and every society, the world seems to revolve around babies. (Although sometimes it seems to revolve around bankers). As soon as someone is pregnant, everyone runs to them to feel the baby move. As soon as the baby is born, everyone runs to hold the baby, or to see it. Even in politics, education is one of the main standpoints, the education of children.
So I’m going to explain how these little people come about. I’m assuming I don’t need to start with the birds and the bees.So I’ll start with how everything I’ve talked about so far comes together, and fertilisation.
A baby is essentially, a mix of its parents DNA. This mixed DNA makes the baby unique (as it is half one parent, and half the other, but not the same as either) and it also gives the baby a code for its own life. Using this new and unique code, the baby can start to make proteins, and form its own body. But there are a couple of hurdles to get over first.
The first is how we put the DNA together, which we do through gametes (the egg and sperm cells).
What essentially happens is that a cell starts to divide so that it can make these eggs and sperm. In normal circumstances this would mean that the DNA would unzip, it would make a copy of itself, and these copies would be put into the new cells. But this is a special form of division (meiosis) where the DNA does not replicate. In fact it more or less stays unzipped and is then pulled into a new cell (a gamete). What we end up with are cells with only half the DNA that they need.
The next stage is simple. The hopeful couple will use their extensive knowledge of the birds and the bees, somehow the sperm ends up inside the woman. The woman’s egg starts rolling about towards the sperm as they swim towards the egg and they meet somewhere in the middle. This sperm invades the egg, and the DNA from the sperm will then combine with that of the egg, making one complete set of mixed up DNA. Thus a baby is born.
I love the music you get in these vids.