Genetics Vocabulary: Genotype and Phenotype
Explore the fundamental concepts of genotype and phenotype with this engaging Grade 8 science worksheet.
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Genetics Vocabulary: Genotype and Phenotype
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Read each question carefully and answer to the best of your ability. This worksheet will test your understanding of genotype and phenotype.
Observe the image below showing the structure of DNA.
1. The genetic makeup of an organism, including both expressed and unexpressed alleles, is called its .
2. The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences, is called its .
3. A section of DNA that codes for a specific trait is known as a .
4. Different forms of a gene are called .
5. Which of the following is an example of a phenotype?
The 'Tt' alleles for tallness
Having blue eyes
The 'BB' alleles for black fur
Being heterozygous
6. If an organism has a genotype of 'Gg' for a certain trait, 'G' being dominant and 'g' being recessive, what would be its phenotype?
Dominant trait
Recessive trait
A mix of dominant and recessive
Cannot be determined
7. A genotype always directly determines the phenotype, regardless of environmental factors.
True
False
8. All individuals with the same genotype will always have the exact same phenotype.
True
False
9. Explain the difference between genotype and phenotype using an example.
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