How Much of Your DNA Is Identical to the Person

question 69

Multiple Choice

How much of your DNA is identical to the person who sits next to you in biology class?

• A) 1%
• B) 50%
• C) 90%
• D) 99%
• E) 99.9%

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Definitions:

Vertebrae

The individual bones that make up the vertebral column (spine) in vertebrates, providing structural support and protecting the spinal cord.

Testudines

An order of reptiles that includes turtles, tortoises, and terrapins, characterized by a bony or cartilaginous shell developed from their ribs.

Lizards

A widespread group of squamate reptiles, with over 6,000 species, ranging across all continents except Antarctica.

Therapsids

A group of mammal-like reptiles of the Permian period; gave rise to the mammals.