Biology 152 Lecture 1 Section 1 Lessons Help Instructor Resources About

Evolution > Species and Speciation


There are millions of species that inhabit this planet, and each of those species plays a unique role. Some species are important disease vectors, some are keystone members of ecosystems, some are agricultural pests, some are university students...the list goes on and on.

It's important to think about species, because they are the basic unit of study in most areas of biology, including: evolutionary biology, ecology, virology, paleontology, genetics, and conservation biology. As an example, studying the transmission of malaria would be virtually impossible without knowing which mosquito species were vectors, which species they prefer to feed on, and which species of Plasmodium they carry.

Are you ready for this lesson?

To use this lesson you should have:

  • reviewed the species concepts from your lecture notes and your book
  • a good understanding of microevolution and natural selection (see Natural Selection tutorial)

Lesson Topics

Click a topic below. We recommend progressing in sequence.

Lesson 1 Tutorial Lesson 2 Tutorial Lesson 3 Tutorial
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