Speciation: Of Ligers & Men - Crash Course Biology

The video explores the concept of species, focusing on humans and dogs. It explains species as groups that can interbreed and produce fertile offspring, using examples like ligers and mules to illustrate hybridization. The video discusses reproductive isolation, both prezygotic and postzygotic, and how it leads to speciation. Allopatric and sympatric speciation are explained, with examples from Darwin's finches and the Grants' research. The video concludes with artificial selection in dog breeding, highlighting how different breeds can still interbreed due to being the same species.

What examples of hybrids are mentioned in the text, and why are they significant?

Discuss the concept of reproductive isolation and its importance in speciation.

How do environmental factors contribute to the evolution of species?

What is the significance of the Grants' research on Darwin's finches?