DNA - nucleotides and bases
The building blocks of DNA are called The units or molecules of which DNA is composed..
There are four different types of nucleotide. The part of a nucleotide that can make it different from others is called the These are the sub-units of DNA and mRNA which make up the genetic code (A, T, G and C)..
The four DNA These are the sub-units of DNA and mRNA which make up the genetic code (A, T, G and C). are adenine, thymine, cytosine and guanine. These base names are abbreviated to A, T, C and G.
Nucleotides are linked together to form strands. DNA consists of two strands of nucleotides twisted around each other to form a shape called a The shape of the DNA molecule, with two strands twisted together in a spiral..
The two strands are held together by weak bonds between pairs of bases. Only certain pairs of bases have complementary shapes that let them form The chemical link that holds molecules together. with each other to make the double helix.
Base A bonds with base T and base G bonds with base C. These are Refers to the specific way that the bases in DNA pair with each other ( A-T and G-C)..
