Punnett Square Practice
Authored by Aimee Farmer
Biology
7th Grade
NGSS covered
Used 1K+ times
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About
This quiz focuses on the fundamental concepts of genetics, specifically Mendelian inheritance patterns and Punnett square analysis. The content is appropriate for 7th grade middle school students who are learning basic heredity principles for the first time. Students need to understand the distinction between genotype (genetic makeup) and phenotype (observable characteristics), master the concepts of dominant and recessive alleles, and recognize homozygous versus heterozygous gene combinations. The questions systematically build from vocabulary recognition to practical application of Punnett squares for predicting offspring ratios. Students must demonstrate their ability to analyze monohybrid crosses, calculate probability percentages for specific traits, and interpret genetic notation using capital letters for dominant alleles and lowercase letters for recessive alleles. Created by Aimee Farmer, a Biology teacher in the US who teaches grade 7. This quiz serves as an excellent formative assessment tool that can be implemented during various stages of a genetics unit. Teachers can use it as a warm-up activity to activate prior knowledge before introducing new concepts, as guided practice during direct instruction, or as homework to reinforce classroom learning. The variety of question formats makes it particularly effective for review sessions before summative assessments, allowing students to self-check their understanding of key vocabulary and problem-solving skills. This assessment directly supports NGSS standard MS-LS3-2 (Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation) and reinforces the foundational concepts students need before advancing to more complex genetic principles in high school biology.
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35 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Aa, DD, bB, yy are all examples of
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
AA and Aa always show up as
Tags
NGSS.HS-LS3-1
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
Tags
NGSS.HS-LS3-1
NGSS.HS-LS3-3
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following genotypes is homozygous dominant?
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following genotypes is heterozygous?
Tags
NGSS.HS-LS3-1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?
Tags
NGSS.HS-LS3-3
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