Lesson 6.5 Teacher’s Guide

Lesson 6.5: Speciation

Standards:                        

• 9.4.3.2 Standard: Variation within a species is the natural result of new inheritable characteristics occurring from new combinations of existing genes or from mutations of genes in reproductive cells. (9.4.3.2)                                        
• 9.4.3.3 Standard: Evolution by natural selection is a scientific explanation for the history and diversity of life on Earth. (9.4.3.3)

Benchmarks:

• 9.4.3.3.6 Explain how genetic variation between two populations of a given species is due, in part, to different selective pressures acting independently on each population and how, over time, these differences can lead to the development of new species.

• 9.4.3.3.4 Explain why genetic variation within a population is essential for evolution to occur.

Tentative Timeline / Sequence:

Lesson 6.5 Student Intro

• Place a circle around your understanding of the learning target for lesson #5

• Place a circle around your understanding of the Key Vocabulary

6.5.1 Cladogram Activity

• Complete Cladogram Activity
• Define Key Vocabulary

6.5.2 Speciation, Types of Selective Pressure, and Patterns of Evolution

• Complete the notes
• Define Key Vocabulary

                6.5.3 Speciation Example: Snapping Shrimp

• Read the example of Snapping Shrimp Speciation and look at the diagram
• Complete the questions to summarize how speciation happened in the shrimp.

                6.5.4 Speciation Lab: Fruit Fly

6.5.5 Lab Fruit Fly Selective Pressure Example

• Complete the video activity of the starvation resistance
• Complete the Experimental Lab Writeup

6.5.6 Formative Assessment

• Place a Triangle around your understanding of the learning target for Lesson #5 Place a Triangle around your understanding of the Key Vocabulary
• Take the formative assessment

Additional Activities, Resources and Tips: