Epistasis
| Description: Epistasis Quiz: Test Your Understanding of Gene Interactions | |
| Number of Questions: 15 | |
| Created by: Aliensbrain Bot | |
| Tags: genetics epistasis gene interactions dominance recessiveness |
What is epistasis?
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The interaction between two or more genes that control the same trait
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The interaction between two or more genes that control different traits
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The interaction between a gene and the environment
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The interaction between two or more genes that control the same trait, resulting in a new phenotype
Epistasis is a phenomenon in which the expression of one gene is modified by the presence of one or more other genes.
What are the two main types of epistasis?
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Dominant epistasis and recessive epistasis
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Additive epistasis and multiplicative epistasis
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Complete epistasis and incomplete epistasis
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Simple epistasis and complex epistasis
Dominant epistasis occurs when the expression of one gene masks the expression of another gene, while recessive epistasis occurs when the expression of one gene is only visible in the absence of another gene.
In dominant epistasis, which gene is responsible for the observed phenotype?
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The epistatic gene
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The hypostatic gene
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Both genes equally
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Neither gene
In dominant epistasis, the epistatic gene is responsible for the observed phenotype, while the hypostatic gene is masked.
In recessive epistasis, which gene is responsible for the observed phenotype?
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The epistatic gene
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The hypostatic gene
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Both genes equally
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Neither gene
In recessive epistasis, the hypostatic gene is responsible for the observed phenotype, while the epistatic gene is only visible in the absence of the hypostatic gene.
What is the difference between complete epistasis and incomplete epistasis?
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In complete epistasis, the epistatic gene completely masks the expression of the hypostatic gene, while in incomplete epistasis, the epistatic gene only partially masks the expression of the hypostatic gene
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In complete epistasis, the epistatic gene is dominant, while in incomplete epistasis, the epistatic gene is recessive
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In complete epistasis, the hypostatic gene is dominant, while in incomplete epistasis, the hypostatic gene is recessive
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In complete epistasis, both genes are dominant, while in incomplete epistasis, both genes are recessive
Complete epistasis occurs when the epistatic gene completely masks the expression of the hypostatic gene, resulting in a single phenotype, while incomplete epistasis occurs when the epistatic gene only partially masks the expression of the hypostatic gene, resulting in a range of phenotypes.
What is the difference between simple epistasis and complex epistasis?
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In simple epistasis, only two genes are involved in the interaction, while in complex epistasis, three or more genes are involved
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In simple epistasis, the epistatic gene is dominant, while in complex epistasis, the epistatic gene is recessive
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In simple epistasis, the hypostatic gene is dominant, while in complex epistasis, the hypostatic gene is recessive
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In simple epistasis, both genes are dominant, while in complex epistasis, both genes are recessive
Simple epistasis involves the interaction of only two genes, while complex epistasis involves the interaction of three or more genes.
What is an example of epistasis in humans?
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The interaction between the genes for eye color and hair color
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The interaction between the genes for blood type and Rh factor
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The interaction between the genes for sickle cell anemia and thalassemia
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The interaction between the genes for cystic fibrosis and Tay-Sachs disease
The interaction between the genes for sickle cell anemia and thalassemia is an example of epistasis in humans. In this case, the presence of the sickle cell gene masks the expression of the thalassemia gene, resulting in a milder form of the disease.
What is an example of epistasis in plants?
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The interaction between the genes for flower color and petal shape
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The interaction between the genes for leaf shape and stem height
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The interaction between the genes for fruit color and fruit size
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The interaction between the genes for seed color and seed shape
The interaction between the genes for flower color and petal shape is an example of epistasis in plants. In this case, the presence of the gene for red flowers masks the expression of the gene for white petals, resulting in red flowers with white petals.
What is the importance of epistasis in genetics?
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Epistasis helps to explain the inheritance of complex traits
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Epistasis helps to identify the genes responsible for genetic diseases
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Epistasis helps to develop new drugs and treatments for genetic diseases
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All of the above
Epistasis is important in genetics because it helps to explain the inheritance of complex traits, identify the genes responsible for genetic diseases, and develop new drugs and treatments for genetic diseases.
Which of the following is an example of dominant epistasis?
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A gene for brown eyes masks the expression of a gene for blue eyes
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A gene for red hair masks the expression of a gene for blonde hair
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A gene for sickle cell anemia masks the expression of a gene for thalassemia
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A gene for cystic fibrosis masks the expression of a gene for Tay-Sachs disease
In dominant epistasis, the epistatic gene is dominant and masks the expression of the hypostatic gene. In this case, the gene for brown eyes is dominant and masks the expression of the gene for blue eyes.
Which of the following is an example of recessive epistasis?
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A gene for blue eyes masks the expression of a gene for brown eyes
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A gene for blonde hair masks the expression of a gene for red hair
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A gene for thalassemia masks the expression of a gene for sickle cell anemia
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A gene for Tay-Sachs disease masks the expression of a gene for cystic fibrosis
In recessive epistasis, the epistatic gene is recessive and only masks the expression of the hypostatic gene in the absence of the dominant allele. In this case, the gene for thalassemia is recessive and only masks the expression of the gene for sickle cell anemia in the absence of the dominant allele for sickle cell anemia.
Which of the following is an example of complete epistasis?
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A gene for brown eyes completely masks the expression of a gene for blue eyes
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A gene for red hair completely masks the expression of a gene for blonde hair
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A gene for sickle cell anemia completely masks the expression of a gene for thalassemia
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A gene for cystic fibrosis completely masks the expression of a gene for Tay-Sachs disease
In complete epistasis, the epistatic gene completely masks the expression of the hypostatic gene. In this case, the gene for brown eyes completely masks the expression of the gene for blue eyes.
Which of the following is an example of incomplete epistasis?
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A gene for brown eyes partially masks the expression of a gene for blue eyes
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A gene for red hair partially masks the expression of a gene for blonde hair
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A gene for sickle cell anemia partially masks the expression of a gene for thalassemia
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A gene for cystic fibrosis partially masks the expression of a gene for Tay-Sachs disease
In incomplete epistasis, the epistatic gene partially masks the expression of the hypostatic gene. In this case, the gene for brown eyes partially masks the expression of the gene for blue eyes.
Which of the following is an example of simple epistasis?
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The interaction between the genes for eye color and hair color
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The interaction between the genes for blood type and Rh factor
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The interaction between the genes for sickle cell anemia and thalassemia
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The interaction between the genes for cystic fibrosis and Tay-Sachs disease
In simple epistasis, only two genes are involved in the interaction. In this case, the interaction between the genes for eye color and hair color is an example of simple epistasis.
Which of the following is an example of complex epistasis?
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The interaction between the genes for blood type and Rh factor
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The interaction between the genes for sickle cell anemia and thalassemia
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The interaction between the genes for cystic fibrosis and Tay-Sachs disease
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The interaction between the genes for height, weight, and body mass index
In complex epistasis, three or more genes are involved in the interaction. In this case, the interaction between the genes for height, weight, and body mass index is an example of complex epistasis.