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.

Main content

Unit 7: Inheritance and variation

700 possible mastery points

About this unit

How do the instructions in genes create the unique traits that we see in every living thing? Learn about how genes work, how they get passed from parent to offspring, and why most living things are genetically unique.

Have we got some special traits for you in this lesson!
Level up on the above skills and collect up to 160 Mastery points
Which gene controls the "unbelievably charming" trait? And why do I have so many of 'em?
MUTANTS ARE AMONG US. Like cold viruses and corn and stuff.

Practice

Make science come alive in your classroom with free hands-on investigative activities aligned to middle school NGSS standards.
Level up on the above skills and collect up to 160 Mastery points
Level up on the above skills and collect up to 240 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 700 Mastery points!
Biology is brought to you with support from the Amgen Foundation