grin from ear to ear. to give a very big smile He was grinning from ear to ear, as if he had just won the lottery.
DNA or deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. DNA replication is the process by which DNA makes a copy of itself during cell division.
DNA is made up from 4 different bases (nucleotides), adenine (A), thymine (T), guanine (G) and cytosine (C). This is true for plants, animals, bacteria, in fact it is true all life forms on earth that contain DNA. The bases on one strand of DNA form base pairs with a second strand of DNA to form the double helix.. I will often talk about sequences; this is because the sequence of DNA codes for the type of protein that is being made and these proteins are the important in all aspects of life. The way DNA encodes a protein is something I will get back to in a bit.