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Tumour supressor genes (TSG) and oncogenes and the two main types of genes involved in cancer, however they are very different. TSG normally function to slow down cell division, repair DNA mistakes and ca...

Arteries and veins are the "tubes" that carry blood around the body.Artieries have thick outer walls in order to cope with the blood passing through being under such high pressure generated by t...

When two populations of a species are isolated geographically (for example by a river, mountain, flood etc). The two populations adapt to different selection pressures and so then eventually evolve into t...

1. chromosomes are copied in the nucleus and condense into chromatids.2) the chromatids are pulled apart and move to opposite poles of the cell.3) the chromosomes separate.4) the cell divides5) 2 cells...

An action potential is generated within the axon of a neuron via a series of steps:1) the inside of the neuron at rest is negative (-70mV), called the resting potential2) Na ion channels open and inside o...