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Genetics is the study of heredity and variation of inherited characteristics. DNA stands for deoxyribonucleic acid. DNA is one of two types of nucleic acid found in our cells. DNA is incredibly intricate and works in complicated mechanisms to control the cell are cells are told what to do by DNA. Each cell has its own job some help us see some help us understand what were touching and some help us here. There are over 200 types of cells in the human body. DNA is made up of nucleotides. There are four types of nucleotides thymine, adenine, cytosine and guanine. The shape of a DNA is called a double helix. 99.9% of the DNA of every human being on the planet is exactly the same. Its that .1% that makes us all unique.
Cells are the basic structure and functional unit of all organisms. Cells are building blocks that create life. All living organisms on earth are divided into cells. Living things may be single celled or they may be very complex, like human beings. In larger organisms the main purpose of a cell is to organize. Cells hold a variety of pieces and each cell type has a different purpose. Plant cells are easier to identify than animal cells because they have a cell wall made of cellulose. Cells are very unique to each type of organism. If you look at very simple organisms you will discover that their cells have no defined nucleus and other cells that have hundreds of nuclei.
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