Genetics Vocabulary: Genotype and Phenotype
Explore the fundamental concepts of genotype and phenotype in genetics through various question types including multiple choice, fill-in-the-blanks, and short answer questions.
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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, phenotype, and related genetic vocabulary.
1. Which term describes the genetic makeup of an organism?
Phenotype
Genotype
Allele
Chromosome
2. The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences, is called the:
Genotype
Phenotype
Heterozygous
Homozygous
3. A specific version of a gene is called an .
4. When an organism has two identical alleles for a particular trait, it is said to be for that trait.
5. The molecule that carries genetic instructions in all known living organisms is .
6. All individuals with the same genotype will always have the exact same phenotype.
True
False
7. A dominant allele is always expressed, even if only one copy is present.
True
False
8. Explain the difference between homozygous and heterozygous genotypes.
9. Provide an example of how environmental factors can influence an organism's phenotype, even if its genotype remains the same.
Match each term with its correct definition.
10. Genotype
a. The observable characteristics of an organism
11. Phenotype
b. The genetic makeup of an organism
12. Allele
c. A specific version of a gene