Population genetics is the branch of genetics which studies the genetic composition of populations. It brings together genetics, evolution, natural selection, breeding, statistics and mathematics. It's one of those rare crossroads of multiple disciplines that gives a wider perspective to ourselves and nature.

It doesn't just answer the question of what we are, but also why we are as we are.

Isn't it strange that there is a group of air-breathing mammals that lives in an environment that may result in them suffocating? Other than humans in space, the only other creatures that chose to leave their comfort zones are cetaceans (whales and porpoises).

The explanation for humans is simple: adventure and/or stupidity. But what about whales?

If you dig down into the Earth far enough, you will notice the gradually decreasing complexity of life that came before us, interrupted now and then by periods of extinction. But what if there is a gap of complexity that can't be explained? A sudden, inexplicable layer of the strangest most alien creatures to ever walked (swam?) the Earth? And what's more, before that, there is practically nothing in comparison to them?

​Have we found the moment when God's hand meddles in Earthly matters?

If we look at the early fetal stage of different species, we'd notice that most of them started out the same, and the closer one species is related to another, the more similarities they have between them. Now if we were to take this on an evolutionary level, stretching back millions of years, can we see a period where both species are essentially the same?

Considering that all life on Earth are related to one another, the consequences might be surprising.

The emergence of chordates are the first step that nature made to put rigidity in lifeforms. Having a structure seems to be advantageous along the evolutionary path as this was later joined by the development of exoskeletons. by invertebrates  It also allow for creatures to emerge beyond the buoyant world of the oceans...

​...and take our first steps onto solid ground.