If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Main content

Unit 17: DNA as the genetic material

300 possible mastery points

Mastered

Proficient

Familiar

Attempted

Not started

Quiz

Unit test

About this unit

This unit is part of the Biology library. Browse videos, articles, and exercises by topic.

Structure of DNA

Learn

Practice

Nucleic acidsGet 3 of 4 questions to level up!

Discovery of DNA

Learn

Practice

Discovery of DNAGet 3 of 4 questions to level up!

DNA replication

Learn

Practice

DNA replicationGet 3 of 4 questions to level up!

Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 300 Mastery points!

Biology is brought to you with support from the Amgen Foundation