including DNA and RNA. This backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule. DNA and RNA are composed of nucleotides that are linked to ...
In DNA, 2-deoxy-D-ribose molecules link together through phosphate groups to form a sugar-phosphate backbone. This backbone provides the structural framework for DNA, holding the nitrogenous bases ...
DNA and RNA strands vary in length from less than two dozen base pairs to more than 200 million. Nucleotides are the ...
Most DNA molecules consist of two polymers (double-stranded) of four nucleotides that each consist of a nucleobase, the carbohydrate deoxyribose and a phosphate group, where the carbohydrate and ...