What are the 4 bases found in a strand of DNA?

What are the 4 bases found in a strand of DNA?

There are four different DNA nucleotides, each defined by a specific nitrogenous base: adenine (often abbreviated “A” in science writing), thymine (abbreviated “T”), guanine (abbreviated “G”), and cytosine (abbreviated “C”) (Figure 2).

Which bases are found in DNA?

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.

How many bases are in a strand of DNA?



The bases are the “letters” that spell out the genetic code. In DNA, the code letters are A, T, G, and C, which stand for the chemicals adenine, thymine, guanine, and cytosine, respectively. In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine.

What enzyme breaks Phosphodiester?


What enzyme creates phosphodiester bonds?

DNA polymerases

What does a phosphodiester bond Link?

The phosphodiester bond links a 3′ carbon to a 5′ carbon in DNA and RNA. During polymerization of nucleotides to form nucleic acids, the hydroxyl group on the phosphate group attaches to the 3′ carbon of a sugar of one nucleotide to form an ester bond to the phosphate of another nucleotide.

Where are nitrogenous bases found in DNA?

Nitrogenous bases present in the DNA can be grouped into two categories: purines (Adenine (A) and Guanine (G)), and pyrimidine (Cytosine (C) and Thymine (T)). These nitrogenous bases are attached to C1′ of deoxyribose through a glycosidic bond.

Where is a glycosidic bond located in DNA?

Glycosidic Bond In DNA, refers to the nitrogen-carbon linkage between the 9′ nitrogen of purine bases or 1′ nitrogen of pyrimidine bases and the 1′ carbon of the sugar group.