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Allopatric speciation occurs when two species are living in separate environments and therefore there is no gene flow between the populations. This will then cause the populations to differentiate (change...

A main concern for both plants and animals is to hold onto as much water as possible and prevent evaporation wherever possible, which you should keep in mind when trying to recall what kinds of features t...

Both are cell divisions. Mitosis produces two identical daughter cells where the number of chromosomes is the same as the parent cell. These are used for growth, repair, asexual reproduction. Meiosis prod...

These two processes can often be confused very easily. To begin with both processes are based on the principle of molecules moving from an area of high concentration to an area of lower concentration. Wit...

So the muscle is made up of 2 muscle filaments, a thick filament called myosin and a thin one actin. This can be remembered by actin having 2 syllables which is less than myosin which has 3 so actin is th...