Composed of a sugar-phosphate backbone and base pairs (adenine-thymine, guanine-cytosine), DNA stores genetic information, replicates, and expresses traits. The human genome contains 6 billion …

DNA and RNA are polymers (in the case of DNA, often very long polymers), and are made up of monomers known as nucleotides. When these monomers combine, the resulting chain is called a …

Explore the molecular structure of DNA, including its double helix and complementary base pairing. Examine RNA’s single-stranded structure and its role in gene expression.

DNA and RNA, composed of nucleotide building blocks, store hereditary information. These polymers have a backbone of alternating ribose and phosphate groups, with nitrogenous bases forming ladder …

A scientist designs a primer, which is a short oligonucleotide, for use in a DNA sequencing reaction. The primer is complementary to the DNA template shown below.

Learn about the structure of RNA and the many functions that RNA carries out in the cell.

A scientist designs a primer, which is a short oligonucleotide, for use in a DNA sequencing reaction. The primer is complementary to the DNA template shown below.

The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA. Specifically, RNA polymerase builds an …

A scientist designs a primer, which is a short oligonucleotide, for use in a DNA sequencing reaction. The primer is complementary to the DNA template shown below.

Knowing the structure of DNA unlocked the door to understanding many aspects of DNA's function, such as how it is copied and how the information it carries can be used to produce proteins.