Georgia S7L3.a
The Standard
Construct an explanation supported with scientific evidence of the role of genes and chromosomes in the process of inheriting a specific trait.
Georgia Standards of Excellence for Science · Obtain, evaluate, and communicate information to explain how organisms reproduce either sexually or asexually and transfer genetic information to determine the traits of their offspring.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students explain that genes are sections of DNA found on chromosomes. They use evidence to show how chromosome copies from each parent can affect an offspring’s trait.
What Mastery Looks Like
- Students can trace a gene from parents to offspring using a chromosome model, Punnett square, or family data. They connect inherited gene versions to a specific trait.
Common Misconceptions
- Students may think chromosomes and genes are the same thing, or that each trait is carried on its own chromosome. They may also think offspring receive traits from only one parent.
How to Assess It
- Give students a parent and offspring chromosome diagram for flower color. Ask, “How did the offspring inherit its flower color? Use two details from the diagram.”
Lesson moves
Ways to Teach It
Build parent and offspring chromosome pairs with colored paper strips, marking gene versions with letter stickers and tracing their transfer.
Write a claim explaining why siblings can inherit different versions of a gene from the same parents.
Play a chromosome card game where students pair parent cards, record inherited gene versions, and predict each offspring’s trait.
Examine a simple dog coat color pedigree and identify evidence that the trait passes from parents to offspring.
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Related Standards
- S5L2
Obtain, evaluate, and communicate information showing that some characteristics of organisms are inherited and other characteristics are acquired.
- S7L5.a
Use mathematical representations to evaluate explanations of how natural selection leads to changes in specific traits of populations over successive generation...
- S7L3.c
Ask questions to gather and synthesize information about the ways humans influence the inheritance of desired traits in organisms through selective breeding.
- S7L5.b
Construct an explanation based on evidence that describes how genetic variation and environmental factors influence the probability of survival and reproduction...
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