Describe the basic structure of a DNA and complementary base pairing.

DNA is a large polymer consisting of two DNA strands that form a double helix. Each strand is made up of bases. In DNA, there are four different bases:Adenine, Thymine, Cytosine & GuaninePairs of bases form chemical cross-links between the two strands of DNA to form the final double helix. The base pairs always form a particular way:- Adenine always pairs with Thymine (A --- T)- Cytosine always pairs with Guanine (C --- G)This process is called complementary base pairing.

TD

Related Biology GCSE answers

All answers ▸

Describe the reflex arc.


Label the parts marked on the diagram of the eye


What are the different parts of a plant cell and what are their functions?


One form of muscle disease is caused by a mutant myosin allele. It prevents myosin from binding to other myosin molecules, thus preventing contraction. Suggest why.