All of the information needed to build and maintain an organism — whether it's a human, a dog, or a bacterial cell — is contained in its DNA. DNA molecules are composed of four nucleotides ...

Nucleotides are the units which, when linked sugar to phosphate, make up one side of a DNA ladder. During DNA replication, special enzymes move up along the DNA ladder, unzipping the molecule as ...

This forms two replication forks that move along the DNA, replicating as they go. DNA is always synthesized in the 5'-to-3' direction, meaning that nucleotides are added only to the 3' end of the ...

When a cell divides, it makes a copy of its DNA instructions for the new cell. The twisted double strand structure -- the famed double helix -- unwinds and the strands separate. The nucleotides (A ...

these monomers are called nucleotides or nucleobases. The enzymes that handle DNA molecules are often called "polymerases," ...

DNA replication is the process by which the DNA molecule makes ... The code consists of 64 codons, each composed of three nucleotides (a triplet). Each codon specifies a particular amino acid or a ...

reporting the creation of additional artificial nucleotides, X and Y, that could pair up within DNA and take part in replication within ...

A few years ago, the advent of technology known as CRISPR was a major breakthrough in the scientific world. Developed from a ...

Chemotherapy drugs can kill cancer cells by halting DNA replication, but a glucose-depleted environment ... implying that they used the same levels of nucleotides. To understand this unexpected ...

These nucleotides can then be further processed to form the ... leading to the termination of DNA replication and cell death. Some pyrimidine derivatives, such as pyrithiobac and bispyribac, are used ...

Developed from a derivative of the immune system of bacteria, CRISPR enables double strands of nucleotides ... such as cell replication or repair. Single-stranded DNA is also used in many ...

Each strand can be used as a template to create a new DNA molecule. Free DNA nucleotides – needed to form the new strands. DNA polymerase – an enzyme that adds new nucleotides to a growing str ...