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Natural Selection is the accepted theory of evolution first postulated by Charles Darwin and can be thought of as 'survival of the fittest'. It is the process by which a species gradually evolves thro...

The main function of the red blood cell is transport oxygen around the body to other cells. It contains haemaglobin which allows the binding of oxygen. Its biconcave shape maximises the surface area t...

There are a few differences that you can use to tell apart or describe these types of cells.

The first distinguishing feature is whether the cell is eukaryotic or prokaryotic - this helps to s...

Macrophages are simply monocytes that reside in tissues, rather than blood. In histology, monocytes appear bean shaped, whereas macrophages are just large with fluffy edges.

- Differences in genes lead to variation within a species

- It is in an individuals' best interest to produce the maximum amount of offspring in order to have maximum variation in the genes of...