Want to teach genetics using real organisms actual scientists use instead of cartoon characters or made-up examples? In this lesson illustrated with helpful model organisms who give students tips along the way, students will learn a step-by-step process to complete Punnett square genetics problems. And here is a free PowerPoint with images and videos of the organisms in the tutorial!
These are important concepts for students to grasp before they can move onto more difficult problems involving F1 & F2 crosses, incomplete dominance, and much more.
Before your students complete this lesson, I highly recommend you use my lesson called Genetics with Model Organisms 1: Pre-Punnett Square Skills
to make sure your students understand the concepts of genotype, phenotype, heterozygous, homozygous, dominant, and recessive.
When teaching genetics to students with a wide range of abilities, I find some students can teach themselves by reading my tutorial type writing and instructions. For students who need more help, I go through each step of the learning process with them. I project the handout on the wall or SmartBoard and I can fill it out with them, explaining as we fill out example questions together.
In this lesson there are 19 (most are multi-part) questions that help students develop the following skills:
Review matching questions to review the concepts of genotype, phenotype, heterozygous, homozygous, dominant, and recessive.
Determine gametes from parent genotypes
Determine the genotype and gametes for parents from a paragraph
Punnett Square Completion
Determining genotype fractions and percentages of offspring
Determining phenotype fractions percentages of offspring
There are questions for every combination of parent genotypes:
Homozygous recessive x homozygous recessive
Heterozygous x homozygous recessive
Heterozygous x homozygous dominant
Heterozygous x heterozygous
Homozygous dominant x homozygous recessive
Homozygous dominant x homozygous dominant
Page 1: Review questions, Explanation of Gametes and Gamete Practice
Page 2: Genotype and Gamete Determination Practice
Page 3: Punnett Square Step-by-Step Tutorial and Examples
Page 4: Punnett Square Step-by-step Tutorial and Examples
Page 5: Practice Questions that guide students through each step
Page 6: Practice Questions
Page 7: Practice Questions
Page 8: Teacher Instructions
Page 9-12: Teacher Full Answer Key
Check out the next in this series: Genetics with Model Organisms 3: P1, F1, and F2 Problems
If you have any questions, suggestions, or corrections, please leave a question on the question and answer section of my store and I will get back to you quickly!
Subscribe to my store update email list and receive a free subscriber exclusive resource! Click here to subscribe!
How to get TPT credit to use on future purchases:
**Please go to your My Purchases page (you may need to login). Beside each purchase you'll see a Provide Feedback button. Simply click it and you will be taken to a page where you can give a quick rating and leave a short comment for the product.
How to be the first to know about my discounts, freebies, and new products:
**Look for the green star near the top of any page within my store and click it to become a follower. You will then receive customized email updates about this store.