Genetic Variation Worksheet
Explore the mechanisms and importance of genetic variation in populations with this Grade 12 Biology worksheet.
Includes
Standards
Topics
Genetic Variation
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. Which of the following is NOT a primary source of genetic variation?
Mutation
Gene flow
Sexual reproduction
Asexual reproduction
2. Crossing over occurs during which phase of meiosis?
Prophase I
Metaphase I
Anaphase II
Telophase II
3. A change in the DNA sequence is called a .
4. The random distribution of homologous chromosomes to daughter cells during meiosis is known as assortment.
5. Genetic variation is always beneficial to a species.
True
False
6. Gene flow can introduce new alleles into a population.
True
False
7. Explain how mutations contribute to genetic variation.
8. Describe two ways sexual reproduction increases genetic variation in offspring.
9. The diagram below illustrates a DNA double helix. Identify the components labeled A, B, and C.
A:
B:
C:
Related Worksheets
Grade 12 Biology: Dissection Fundamentals
This worksheet covers essential concepts and practices in biological dissection, including safety, tool identification, and ethical considerations for Grade 12 Biology students.
Evidence of Evolution Worksheet
Explore the various lines of evidence supporting the theory of evolution, including homologous structures, embryology, and fossil records.
Grade 12 Biology: The Integumentary System
This worksheet covers the structure, function, and common conditions of the human integumentary system for Grade 12 Biology students.
Neuromuscular Junction Worksheet
A Grade 12 Science worksheet covering the structure and function of the neuromuscular junction, including neurotransmission and muscle contraction.
Enzyme Activity Worksheet
Grade 12 Science worksheet focusing on enzyme activity, factors affecting it, and enzyme kinetics.
Muscles of the Leg: Structure and Function
A Grade 12 Biology worksheet exploring the anatomy, function, and types of muscles in the human leg.
Convergent Evolution Worksheet
Explore the concept of convergent evolution, where unrelated species develop similar traits due to similar environmental pressures.
Grade 12 Biology: Heart Rate
This worksheet explores the physiological mechanisms regulating heart rate, factors influencing it, and methods of measurement for Grade 12 Biology students.