Module 4 Intro: Lesson 4 Intro

1. Module 4 Intro

1.21. Lesson 4 Intro

Lesson 4

Module 4—Mechanisms of Population Change

Lesson 4—How New Species Form

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This photo is of a man’s torso. The torso appears to be half- machine, half human.

speciation:the formation of new species

What does it take to make a new species? In movies, a radical mutation in human DNA will often create a weird superhuman. Or a human will be infected with an unknown virus and become a blood-seeking creature. This looks great on the big screen, but does it really portray a new species of homo sapiens? Maybe, but certain conditions apply—random mutations definitely direct the evolutionary path of speciation. However, there are conditions that allow these mutations to create a whole new species.

In this lesson you will explore the following essential question:

What conditions are necessary for speciation?

Module 4: Lesson 4 Assignment

Your teacher-marked Module 4: Lesson 4 Assignment requires you to submit a response to the following:

TR 2. Leopard Frogs: One Species or Seven?
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