Question: What is a Chromosome?

Danny Ward answered on 11 Nov 2018:

A chromosome is how DNA (genetic information) is stored and organised in living things. The organism will access its chromosome(s) like an instruction book, it will tell it how to live, survive, grow, develop, reproduce and more at a genetic level.
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DNA is wound up tightly on these chromosomes so that we can fit loads of DNA in to our tiny cells. Each cell in our body (which are usually have an area less than 0.003 to 0.5 cm) can fit about 2 meters of DNA in them thanks to these chromosomes. In humans, we have 23 pairs of chromosomes in each cell that kind of look like little X’s. Other organisms will be different. Dogs have 46 pairs for example. Wheat has 42. Most bacteria have a circular chromosome instead of our X shaped ones.