Study Guide

Speciation Topics

What is a Species?

Most people can look at a dog and a horse and guess that they are two different species. That is,...

Species Concepts

What are species, exactly? There are many definitions for the concept of species. There is no...

What's So Special About Speciation?

Now that we're armed with the BSC, we can finally explore Speciation—the evolutionary...

Reproductive Isolation

One of the pillars of speciation, reproductive isolation starts it all. Speciation is not...

The Geography of Speciation

The where of speciation can often be really informative in answering the why's and how's that...

Bring in the Reinforcements

Imagine an allopatric speciation scenario; a continuous population of species gets divided, and...

The Tempo of Evolution

We've mentioned a few times that something occurs on "evolutionary timescales," but what exactly...

Adaptive Radiation

No, this is not the name of a tanning salon. It's an evolutionary phenomenon in which organisms...

Hybridization vs. Hybrid Speciation

Hybridization is the anti-speciation. Successful species exist by avoiding the formation of...

Common Mistakes

Sometimes the difference between a subspecies and a species can seem a bit fuzzy, because there's...

Test Your Knowledge!

1. What is HGT?  2. Do you have to understand modern Linnaean taxonomy in order to...