Date: January 28, 2000

Grade Level(s):  9, 10

Subject(s):

• Science/Genetics

Goals:  Students will be able to define, calculate, and explain various aspects of Mendalian genetics.

Objective(s):

 Students will be able to:

1. define terms dominant, recessive, heterozygous, homozygous, genotype, and phenotype
2. explain how Mendel derived ratios from his observations
3. calculate ratios, by using Punnett Squares
4. explain and complete monohybrid crosses
5. effectively manipulate the interactive website

 24- Computer Lab

 back-up activity in case system goes down

Clerical/Administrative Tasks:

Take role
Copy back-up activity

Introduction:

Motivation- Is it possible for two people with brown eyes to have a child with blue eyes.

Demonstration- Overhead of Punnett Square explaining how it is possible.

Development:

Directions- explain concepts using website given below as visual aid.
Go to interactive website The Biology Project - Mendelian Genetics
Work on problems and tutorials on monohybrid crosses, individually.
Monitor activity: keep students on task.

Closure:

Any questions about lesson?
Discuss other attributes besides eye color that are dominant/recessive in humans.
Match students in twos; use Punnett squares to find if their offspring would have a certain attribute.

Assessment:

Students will:

1. define terms dominant, recessive, heterozygous, homozygous, genotype, and phenotype accurately
2. calculate ratios, by using Punnett Squares accurately
3. explain and complete monohybrid crosses
4. effectively manipulate the interactive website