Genetics Vocabulary: Genotype and Phenotype
Explore the fundamental concepts of genotype and phenotype with this engaging worksheet for 6th graders. Learn key vocabulary and apply your understanding to genetic examples.
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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 knowledge of genetics vocabulary, specifically genotype and phenotype.
1. The genetic makeup of an organism is called its .
2. The observable physical characteristics of an organism are its .
3. A section of DNA that codes for a specific trait is called a .
4. Different forms of a gene are known as .
1. Which of the following describes a person's eye color?
Genotype
Phenotype
Allele
Gene
2. If an organism has two identical alleles for a trait, it is said to be:
Heterozygous
Dominant
Homozygous
Recessive
1. Your genotype can change based on your environment.
True
False
2. A dominant allele will always be expressed as a phenotype if present.
True
False
1. Explain the difference between genotype and phenotype using an example.
2. What is the role of DNA in determining an organism's traits?
Match each term on the left with its definition on the right.
1. Allele
a. The observable traits of an organism
2. Gene
b. A unit of heredity that is transferred from a parent to offspring
3. Genotype
c. The genetic makeup of an organism
4. Phenotype
d. Different forms of a gene
Use the words below to complete the sentences.
1. Traits are passed from parents to offspring, meaning they are .
2. A allele will only show its trait if two copies are present.
3. The molecule that carries genetic instructions in all living things is .