Khan Academy
Learn about the Hardy-Weinberg mechanisms of evolution and how they affect allele and genotype frequencies in populations.
Khan Academy
Genetic drift is a mechanism of evolution that causes random changes in allele frequencies in populations, leading to reduced genetic variation.
Evolution and natural selection review (article) | Khan Academy
Lesson 1: Evolution and natural selection. Introduction to evolution and natural selection. Ape clarification. Natural selection and the owl butterfly. Variation in a species. Evolution and …
Speciation - Khan Academy
This article discusses species and speciation, explaining the process of how new species are formed through natural selection.
Evolution of viruses (article) | Khan Academy
Virus evolution and genetic variation. Drug-resistant HIV. Reassortment of flu viruses.
Genetic drift - Khan Academy
In this article, we’ll examine genetic drift, an evolutionary mechanism that produces random (rather than selection-driven) changes in allele frequencies in a population over time.
Unit 7: Mechanisms of evolution - Science | Khan Academy
In this unit, we’ll delve into the mechanisms of evolution. We’ll explore how natural selection, adaptation, speciation, and group behavior shape the living world around us. This journey will …
Khan Academy
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 …
Khan Academy
Khan Academy
Khan Academy
Math: Pre-K - 8th grade; Pre-K through grade 2 (Khan Kids) Early math review; 2nd grade; 3rd grade; 4th grade; 5th grade; 6th grade; 7th grade; 8th grade; 3rd grade math (Illustrative Math …