DNA, Chromosomes, Genes, and Traits: An Intro to Heredity

Explore DNA structure/function, chromosomes, genes, and traits and how this relates to heredity! Video can replace old DNA structure & function video and in addition covers foundational concepts of heredity. Expand details for video handout: and table of contents.

Table of Contents:
Video Intro 00:00
Intro to Heredity 1:34
What is a trait? 2:08
Traits can be influenced by environment 2:15
DNA Structure 3:25
Genes 5:32
Some examples of proteins that genes code for 5:54
Chromosomes 6:37
Recap 7:18

To learn more about heredity including dominant and recessive traits, alleles, and probabilities in inheritance, see our full playlist here:

The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit:


We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook:

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