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All human body cells have 23 pairs of chromosomes (46 total), 22 pair of autosomes and 1 pair of sex chromosomes. However, sperm and egg cells only have one set of chromosomes (23 total).

using the method, what two numbers multiply to create -1 and add to make 0 -1 must be 1 x -1 therefore answer is (x+1)(x-1) - is it clear how the single x value is cancelled out? x^2 +x -1 -x = x^2 -1

The Abbey of Saint Denis was rebuilt from 1135 - 1144 under the watchful eye of its abbot, Suger, a schoolfellow of the King. Although Saint Denis' position in the evolution of Gothic architecture is dispute...

It can feel overwhelming when you turn the page and see a 12 mark question to answer. How do you get those marks? When a question asks you to "discuss" it is looking for a comprehensive answer that...