Lesson 4.10.3

Lesson 3 - Adaptations and Evolutions

Get Focused

Changes can also occur at the individual level which will eventually affect the composition of populations as well. In this lesson we will investigate the mechanisms of change within individuals that and the mechanism that can cause subsequent change to populations as well.

Consider the following essential questions as you complete Lesson 3 :

  • What is variation ?
  • What are causes of variation ?
  • What is natural selection ?
  • What changes have been observed in populations due to the action of natural selection

explore Explore

Click on the link below to explore the content.

Content link for Lesson 4.10.3

 

Vocabulary

Below is the link to the Science 20 glossary. Make sure you can define the terms associated with this lesson from the glossary

Science 20 Glossary

 

 

Read Read

Read pages 488 - 504 in the Science 20 textbook

Topic 4.10.3 Text Part A

Topic 4.10.3 Text Part B

Self Check

Try the knowledge questions on page 504 of your Science 30 text book to check your comprehension.

Watch and Listen

 

Reflect and Connect

Micro evolution is almost universally accepted however much discussion still centers on macro-evolution. What is the difference between the two an why is there controversy about it ? Post your answer to the discussion forum.

Module 10 : Lesson 3 Assignment.

Once you have completed all of the learning activities for this lesson, you can complete the online assignment.

Sci20 4.10.3 online assignment

Lesson Summary

In this lesson you learned changes within individuals and species and the mechanisms of these changes.

Lesson 4 will review the Unit 4 content