Genetic Variation Worksheet
Explore the mechanisms of genetic variation in Grade 11 Biology, including mutation, recombination, and their impact on evolution.
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Genetic Variation Worksheet
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Read each question carefully and provide your best answer. This worksheet assesses your understanding of genetic variation and its importance in biological processes.
1. Which of the following is NOT a primary source of genetic variation?
Mutation
Gene flow
Asexual reproduction
Sexual 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 process by which genetic material is exchanged between homologous chromosomes is known as .
5. Genetic variation is essential for a population to to changing environments.
6. All mutations are harmful to an organism.
True
False
7. Independent assortment of chromosomes increases genetic variation.
True
False
8. Briefly explain how sexual reproduction contributes to genetic variation.
9. Observe the diagram of DNA structure below. How does the sequence of bases contribute to genetic information and potential variation?
Match each term with its correct definition.
10. Allele
a. The movement of genes between populations
11. Gene flow
b. Different forms of a gene
12. Genetic drift
c. Random changes in allele frequencies in a population