Pedigrees
Authored by Jodi Johnson
Biology
9th Grade
NGSS covered
Used 2K+ times
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About
This quiz focuses on genetics, specifically pedigree analysis and inheritance patterns, making it perfectly suited for 9th-grade biology students. The questions systematically build understanding from foundational genetic concepts—such as the number of alleles individuals carry and inherit from parents—to complex pedigree interpretation requiring students to determine genotypes based on inheritance patterns. Students need a solid grasp of dominant and recessive alleles, genotype notation, and the ability to trace traits through multiple generations while understanding concepts like carriers and expression patterns. The quiz effectively assesses students' ability to read pedigree symbols, identify relationships between family members across generations, distinguish between autosomal dominant and recessive inheritance patterns, and apply genetic principles to real-world scenarios including specific disorders like Huntington's Disease and hemophilia. The progression from basic symbol recognition to sophisticated genotype determination demonstrates the layered complexity required for mastering genetic inheritance analysis. Created by Jodi Johnson, a Biology teacher in the US who teaches grade 9. This comprehensive pedigree quiz serves multiple instructional purposes in the genetics unit, functioning effectively as a formative assessment tool to gauge student understanding before moving to more complex heredity topics. Teachers can utilize this quiz as a warm-up activity to activate prior knowledge, assign it as homework to reinforce classroom instruction, or implement it as a review session before summative assessments. The variety of question types—from basic symbol identification to complex genotype analysis—makes it ideal for differentiated instruction, allowing students to build confidence with foundational concepts while challenging them with higher-order thinking applications. This assessment aligns with NGSS HS-LS3-3 (applying concepts of statistics and probability to explain variation and distribution of traits) and supports the Common Core mathematical practices of reasoning abstractly and modeling, as students must interpret symbolic representations and apply logical reasoning to determine genetic relationships and inheritance patterns.
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many alleles does a person carry for a trait?
1
2
3
4
Tags
NGSS.HS-LS3-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many alleles does a child get from each parent for a trait?
1
2
3
4
Tags
NGSS.HS-LS3-1
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What do we use pedigrees for?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a pedigree, which shape represents a male?
circle
square
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
On a pedigree, this symbol represents a ---
not affected female.
not affected male.
affected male.
affected female.
Tags
NGSS.HS-LS3-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On a pedigree, this symbol represents a ----
not affected male.
not affected female.
affected male.
affected female.
Tags
NGSS.HS-LS3-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many individuals are there in the 3rd generation?
1
2
4
6
Tags
NGSS.HS-LS2-2
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