Category Archives: 10. Genetics & Evolution

10.1 Meiosis

10.1 meiosis from Bob Smullen

Here are some fantastic animated tutorials about Meiosis from McGraw Hill Education – how Meiosis works, the stages of Meiosis, Crossing-over, Independent Assortment & unique features of Meiosis.

From Sinauer Associates comes an animated, narrated tutorial on Independent Assortment; there’s also one on Independent Assortment & gamete diversity.

Mr. Andersen uses chromosome beads to simulate both Mitosis and Meiosis:

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Independent Assortment & Segregation (click to enlarge)

10.2 Inheritance

10.2 inheritance from Bob Smullen

An animated, narrated tutorial on X-linked disorders (from Sumanas) and a more difficult one: analyzing a cross (recombinants). Various activities on Genetic Disorders from Learn.Genetics.

Paul Andersen explains how Linked Genes behave using fruit flies in a 17m 22s tutorial.

POLYGENES

The science of skin color – Angela Koine Flynn, a 5m vid from TED-Ed.

Breaking the illusion of skin color, a 15m TED-Ed video from Nina Jablonski

10.3 Gene Pools & Speciation

10.3 gene pools and speciation from Bob Smullen

Speciation: an illustrated introduction in 8 minutes or how about the Speciation Song – a song and an animation to introduce Speciation?

 IB 10.3 – Gene Pools and Speciation, a 14m 40s video lesson from Dan Rott videos.

Crash Course Biology #15 – Speciation: Of Ligers & Men, in which Hank explains speciation in terms of finches, ligers, mules and dogs.

Paul Andersen (from Bozeman High) explains Reproductive Isolation and Speciation, then details the processes of Speciation & Extinction and finally describes Genetic Drift (this is more detail than is required for IB).

Here’s a presentation that explains the origin of species (speciation) very clearly: