Genetic Variation Worksheet
Explore the concepts of genetic variation, DNA, and how traits are passed down through generations in this Grade 7 Science worksheet.
Includes
Standards
Topics
Genetic Variation
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show your work where applicable.
1. What is the primary source of genetic variation in sexually reproducing organisms?
Asexual reproduction
Mutations
Genetic engineering
Sexual reproduction
2. Which of the following is the basic unit of heredity?
Cell
Organ
Gene
Tissue
3. Genetic variation is important because it allows populations to to changing environments.
4. The complete set of genetic material in an organism is called its .
5. All offspring from the same parents are genetically identical.
True
False
6. Mutations are always harmful to an organism.
True
False
7. Describe the structure of a DNA molecule. You may refer to the diagram below.
8. Explain how genetic variation benefits a species.
Match each term on the left with its definition on the right.
9. Gene
a. A change in the DNA sequence
10. Allele
b. Different forms of a gene
11. Mutation
c. A segment of DNA that codes for a specific trait
Related Worksheets
Muscles of the Leg Worksheet
A Grade 7 science worksheet focusing on the major muscles of the human leg, their functions, and identification.
Six Kingdoms of Life Worksheet
Explore the characteristics and classification of the six kingdoms of life with this engaging worksheet for Grade 7 science students.
Six Kingdoms of Life Worksheet
Explore the characteristics and classification of the six kingdoms of life with this engaging worksheet for Grade 7 science students.
Human Decomposition: The Science of Decay
Explore the stages of human decomposition, the factors that influence it, and the roles of scavengers and microorganisms in this Grade 7 Science worksheet.
Feedback Loops in Science
Explore the concepts of positive and negative feedback loops in biological and environmental systems.
Humerus Bone Worksheet
Explore the anatomy and function of the humerus bone with this Grade 7 science worksheet.
Invertebrate Animals Worksheet
Explore the fascinating world of invertebrate animals with this worksheet, covering their characteristics, classifications, and examples.
Frog Dissection Worksheet
A worksheet covering the external and internal anatomy of a frog for grade 7 science students.