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Natural selection is one of the fundamental mechanisms of the process of evolution. There are 4 key things to remember about the process of natural selection.1) There is genetic variation within a populat...

Now the first thing to point out when looking at images under an electron microscope is the scale. For example, something that you draw as 3cm long, may in fact be 10, 000 times smaller in real life. So i...

Essentially they both describe the same biological process whereby chromosomes are divided during cell division. Mitosis produces two diploid daughter cells which are identical to eachother (produces new ...

Deoxygenated blood enters the heart through the superior/ inferior vena cava into the right atriumThe atria contract and blood flows through the tricuspid valve into the right ventricleThe right ventricle...

FSH: FSH is released into the blood from the pituitary gland. It is triggered by a fall in progesterone at the end of the previous cycle. It acts upon the ovary, causing developmen...