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Genetics, Genetics, and More Genetics Lesson Overview
Exploring Independent Assortment & Non-Mendelian Genetics

Students will explore various modes of inheritance through a hands-on activity creating offspring of a fictitious organism. Students will complete Punnett Squares for various genetic crosses, and analyze and interpret the results of those crosses. Students will be able to predict the genotype and phenotype of P1 and F1 generations using Punnett Squares. Students will be able to identify complex patterns of inheritance such as codominance and incomplete dominance.


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1-2 Class Periods
2 Students Per Group
PTI Inquiry
1.1, 1.3, 3.1, 3.3, 3.7, 4.3, 4.4, 5.2, 5.3, 5.8, 7.3
Lesson Components Time Inquiry Skills Tech. Used Engage Level Brief Description
Engage 5 min   Computer, Internet Access, Projector 3 Students will engage in a Think Pair Share Activity reflecting on how are traits are inherited. Students will then observe a short YouTube clip (Intro to Genetics) that introduces students to the incredible biodiversity on our planet and the connection to genes and inheritance patterns.
Explore 10 min 3.1, 3.3, 3.7, 4.3, 5.2, 5.8 none 3 Student will use copies of chromosomes to create an “offspring”. They will use independent assortment to separate chromosomes to make gametes. Students will then identify the genotype and phenotype of their offspring. Finally, they will sketch the physical appearance of the offspring.
Explain 30 min 4.3, 4.4, 5.2 none 3 Through a series of guided questions, the students will analyze patterns of inheritance, apply Mendel’s Laws, and construct both a mono and dihybrid cross.
Expand 45 min 1.1, 1.3, 3.1, 3.7, 4.3, 5.2, 5.3 Carolina Biological Lab Kit: Blood Group Genetics 3 (Optional) Students will engage in a blood-typing lab to further investigate multiple-allelic inheritance patterns.
Evaluate 5 min 7.3 none 2-3 Students will answer a brief 5 question summative to demonstrate understanding of the lesson & skills.

Level of Student Engagement
1     Low     Listen to lecture, observe the teacher, individual reading, teacher demonstration, teacher-centered instruction
2     Medium     Raise questions, lecture with discussion, record data, make predictions, technology interaction with assistance
3     High     Hands-on activity or inquiry; critique others, draw conclusions, make connections, problem-solve, student-centered

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