Khan Academy
Natural Selection and the Owl Butterfly
The lecturer describes how certain characteristics develop. In this case, he discusses eye marking. The impact of environmental factors plays a huge role in the probability of successful reproduction and the fact that favorable genes...
TED-Ed
Why Do Women Have Periods?
The female body is an amazing thing. This short video explains the amazing cycle that has developed to ensure the continuation of life. Did you know that only monkeys, apes, bats, humans, and maybe elephant shrews menstruate?
Bozeman Science
Ecological Selection
Humans, through artificial selection, created a dog that is hypoallergenic, loves water, is good with kids, very smart, and comes in a variety of colors — a labradoodle. Through the analysis of dog breeds, class members explore...
TED-Ed
What Is Leukemia?
Leukemia afflicts children more than any other type of cancer. Pupils explore the nature of harmful mutations in cell DNA, the reproduction of damaged cells in blood and bone marrow, and their effect on normal functions of the human body.
Howard Hughes Medical Institute
X Inactivation
Have you ever wondered why calico cats have such a colorful coat? The process of X inactivation is an interesting phenomenon in females that drives the physical appearance of individuals. Viewers of an intriguing video connect knowledge...
Khan Academy
Variation in a Species
If there are no extenuating environmental factors to ensure competition in a species, then variation is achieved by random mutation. This resource may be more useful after viewers are introduced to the concepts of alleles and the...
Khan Academy
Introduction to Evolution and Natural Selection
The evidence for natural selection is presented as a random variation of a characteristic allowing a particular strain of organism to survive with a higher probability of successful reproduction. Population change over a short period of...
Be Smart
Why Do Disney Princesses All Look like Babies?
Could Disney be tricking people into caring about their characters? It seems the design of characters in recent years triggers our nurturing instincts. A video explains the science behind these instinctual habits—and why viewers are so...
Stated Clearly
What is Evolution?
A short video offers a simple, yet engaging, explanation of the theory of evolution using amoebas as an example. The narrator uses the example of the evolution of dog breeds as an example of how humans can influence the course of change.
California Academy of Science
Why Protect Pollinators?
Would you rather having biting flies or chocolate? The question may seem absurd, but cocoa trees rely on pollination from biting flies. Viewers come to understand the importance of pollinators to our food supply, flowers, and entire...
Howard Hughes Medical Institute
Somatic Cell Nuclear Transfer Animation
One cloning technique is somatic cell nuclear transfer (SCNT). Observe the process in action through an animated video. Review the applications of the process for both therapeutic cloning and cloning of an individual.