structure of DNA? explain plz
Answers
Please. Go through. it .
Answer:
HI FRIEND,Here is your answer,
DNA is made up of molecules called nucleotids.each nucleotide contains a phosphate group, a sugar group and a nitrogen base.
the order of nitrogen bases in a DNA sequence forms genes,which is the language of the cell that tells the cell how to make proteins.
Another type of nucleic acid, ribonucleic acid, or RNA, translates genetic information from DNA into proteins.
Nucleotides are attached together to form two long strands that spiral to create a structure called a double helix. If you think of the double helix structure as a ladder, the phosphate and sugar molecules would be the sides, while the bases would be the rungs. The bases on one strand pair with the bases on another strand: adenine pairs with thymine, and guanine pairs with cytosine.
DNA molecules are long — so long, in fact, that they can't fit into cells without the right packaging. To fit inside cells, DNA is coiled tightly to form structures we call chromosomes. Each chromosome contains a single DNA molecule. Humans have 23 pairs of chromosomes, which are found inside the cell's nucleus.