Cell Division

​What we will cover

• ​what is cell division

• why cell division is essential

• processes of cell division​

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​Cell Division Basics

• ​each cell has a cell cycle, where phases of cell division occur

• it is used for growth, reproduction, repairs

• every cell in your body can replicate itself​ or produce reproductive cells

• cell division also occurs in plants and other organisms like bacteria ​

• we began as a single cell, and as a fully grown adult you have about 37 trillion​

​Mitosis

• ​used when a cell needs to make an exact copy of itself

• somatic cells of the body (everything except the sperm and the egg)

• the original cell produces two daughter cells ​

• it uses the genetic information in the nucleus and duplicates it, the the whole cell splits ​

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​Meiosis

• used to create sex/reproductive cells - egg and sperm

• each new daughter cell is not an exact replica, but a mix of the original cells DNA - this is why you are not identical to your siblings

• an egg combines with a sperm cell to create a ​zygote through the process of fertilisation

​Binary Fission (extra)

• A form of asexual reproduction, where a cell doubles its genetic material and then splits itself in half ​

• Bacteria reproduce this way​