DNA
DNA is a double-stranded molecule. It is a polymer of nucleotides. It has a deoxyribonucleic acid, phosphate, and 4 different base molecules. Phosphate act as the backbone.
Functions of DNA
- Replication-transfer the information from one generation to other.
- Recombination leads to mutation which helps in the evolution
- Immunological
- Gene expansion
- Genetics
Why Thymine is present in DNA instead of Uracil ?
DNA is a micromolecule that consists of many subunits it’s connected together. Those subunits knew as nucleotides. The DNA provides replication and information storage. DNA is described as deoxyribonucleic acid generally it is a polymer of deoxyribonucleotides it’s found in chromosomes, mitochondria chloroplast. It has a double-stranded structure and it acts as genetic material in most organisms they carry the genetic information from one generation to another generation. In 1953, James Watson and Francis crick described as DNA a double helix structure.