Homozygous & Heterozygous
Biology
7th - 8th Grade
NGSS covered
Used 637+ times
AI Actions
Add similar questions
Adjust reading levels
Convert to real-world scenario
Translate activity
More...
About
This quiz focuses on fundamental genetics concepts, specifically the distinction between homozygous and heterozygous genotypes and their relationship to phenotypic expression. Designed for middle school students in grades 7-8, the content builds essential vocabulary and conceptual understanding in Mendelian genetics. Students must grasp that genotypes consist of two alleles represented by letters, where capital letters indicate dominant traits and lowercase letters represent recessive traits. The quiz systematically reinforces the critical concept that homozygous genotypes contain identical alleles (either both dominant or both recessive), while heterozygous genotypes contain one dominant and one recessive allele. Students also need to understand the fundamental difference between genotype (the genetic code) and phenotype (the observable physical trait), and apply the principle of dominance to predict that heterozygous individuals express the dominant trait in their phenotype. This quiz was created by a classroom teacher who designed it for students studying middle school biology in grades 7-8. The assessment serves multiple instructional purposes, functioning effectively as a diagnostic tool to gauge student understanding before moving into more complex genetic concepts like Punnett squares and inheritance patterns. Teachers can deploy this quiz as a warm-up activity to activate prior knowledge, assign it as homework to reinforce classroom instruction, or use it for formative assessment to identify students who need additional support with genetic terminology and basic inheritance principles. The repetitive nature of the questions provides excellent practice opportunities, allowing students to build confidence through pattern recognition while mastering the vocabulary essential for success in genetics units. This quiz aligns with NGSS MS-LS3-2, which requires students to develop and use models to describe how gene versions are passed from parents to offspring, and supports the foundational understanding necessary for more advanced genetic problem-solving.
Content View
Student View
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is heterozygous
Tags
NGSS.HS-LS3-2
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is homozygous recessive?
Tags
NGSS.HS-LS3-1
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What does the prefix homo- in homozygous mean?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What does the prefix hetero- in heterozygous mean?
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is heterozygous
Tags
NGSS.HS-LS3-1
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is homozygous dominant?
Tags
NGSS.HS-LS3-1
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The physical appearance of a trait is known as the-
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports
Continue with Google
Continue with Email
Continue with Classlink
Continue with Clever
or continue with
Microsoft
%20(1).png)
Apple
Others
Already have an account?
