Double Helix
DNA’s Shape

DNA’s shape is called a “double helix“.  A simple way to describe a double helix is that it looks like a “twisted ladder”.  See below.

20170529b Double Helix
(Click to Enlarge)

By the way, when a cell is going through “cell division”, which is how a cell divides itself into more cells, it would “un-twist” the DNA to change its shape into a “normal ladder” temporarily.

Next Generation Science Standards:

HS-LS1-1. Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.

HS-LS1-2. Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.


What Science Does this Comic Teach?

Unit: Genetics

⇒Chapter: DNA

⇒Topic: Double Helix

Additional Information


DNA stands for deoxyribonucleic acid, and it is the molecule that makes up genetic materials.

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