What is DNA?

Transcript

00:00

DNA is a molecule that contains the genetic instructions used in the development and function of all living organisms.

00:09

It is composed of a long chain of nucleotides, which are the building blocks of the molecule.

00:15

There are four different types of nitrogenous bases in DNA: adenine, thymine, cytosine, and guanine.

00:24

These bases pair up with each other in a specific way to form the rungs of the DNA ladder.

00:30

The order of these base pairs along the DNA strand forms the genetic code that determines an organism's traits and characteristics.

00:39

DNA is found in the nucleus of cells and is responsible for transmitting genetic information from one generation to the next.

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