Genetics Vocabulary: Genotype and Phenotype
Explore the fundamental concepts of genotype and phenotype with this worksheet designed for Grade 11 science students.
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Genetics Vocabulary: Genotype and Phenotype
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Read each question carefully and provide your answer in the space provided. For multiple-choice questions, select the best option.
Use the words below to complete the sentences.
1. The genetic makeup of an organism is called its .
2. The observable physical or biochemical characteristics of an organism is its .
3. Different forms of a gene are known as .
4. An individual with two identical alleles for a particular gene is .
5. When an individual has two different alleles for a specific gene, they are considered .
6. An allele that masks the expression of another allele is called .
7. An allele that is only expressed when two copies are present is a allele.
1. Which of the following best describes the genotype of an organism?
The observable traits of the organism.
The genetic makeup of the organism.
The environmental factors influencing the organism.
The evolutionary history of the organism.
2. If an organism has the genotype 'Aa', what does this indicate?
It is homozygous dominant.
It is homozygous recessive.
It is heterozygous.
It has an unknown genotype.
1. A phenotype is always directly visible, such as eye color or height.
True
False
2. Environmental factors can influence an organism's phenotype.
True
False
1. Explain the difference between genotype and phenotype using an example.
2. Describe how a recessive allele can still be present in an organism's genotype without being expressed in its phenotype.
The image below illustrates the basic structure of DNA, which carries the genetic information (genotype) that determines an organism's traits (phenotype).
