Major histocompatibility complex and sexual selection

Okay kiddo, let's start with major histocompatibility complex which is also known as MHC. It's like a big group of genes that are found in animals and humans. These genes are very important because they help our bodies to fight off infections and diseases by producing proteins that act as a defense system.

Now let's talk about sexual selection. When animals and humans choose their mates, they often look for specific qualities like a mate's strength or beauty. This is called sexual selection.

So, how are MHC and sexual selection related? Well, scientists have found that animals and humans are more attracted to mates who have different MHC genes than their own. This is because having different MHC genes means that our immune systems will be stronger and better equipped to fight different types of diseases and infections.

So, in a way, sexual selection is helping the human race by making sure that we produce offspring with stronger immune systems. And that's why MHC and sexual selection are so important - they help us to stay healthy and strong!