7th Grade Science Guide
7.4: Reproduction & Inheritance 3 Dimensions & Progressions
Unit 5
and discuss the advantages and disadvantages of both.
Activity: Sexual Reproduction & Genetic Variation
Objective
Overview
Materials
● I can explain how sexual reproduction produces genetic variation.
● Students will obtain, evaluate and
● Lesson plan
communicate information about what happens during fertilization by discussing informational text.
Activity: Inventory of my Traits
Objective
Overview
Materials
● I can explain that traits are observable characteristics that are
● Students take an
● Lesson plan
inventory of their own easily observable genetic traits. Working in small groups, they observe how their trait inventories differ from those of others. Students record their observations in a data table and make a bar graph to show the most and least common traits in thegroup.
passed down from parent to child.
Activity: Building a Twidgie
Objective
Overview
Materials
● I can explain how traits are passed from parent to offspring.
● Students will be
● LabSheet ● Twidgie traits ● Twidgie chromosomes
introduced to simple genetics through creating an organism, called a Twidgie, by using its’ parents traits and recognizing patterns in certain traits outcomes.
● Marshmallows ● Pipe-cleaners ● Toothpicks ● Tacks ● Markers
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