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When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known as
- a)Pseudo-dominance
- b)Hypostasis
- c)Epistasis
- d)Incomplete dominance
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
When the activity of one gene is suppressed by the activity of a non-a...
Epistasis refers to a genetic phenomenon where the activity of one gene masks or suppresses the expression of another non-allelic gene. In this case, the non-allelic gene is affecting the expression of another gene, leading to the suppression of its activity. It is important to note that epistasis can occur in different ways, including dominant or recessive epistasis.
Pseudo-dominance (option A) refers to a situation where a recessive allele becomes expressed in the phenotype because the dominant allele is absent. It is not specifically related to the suppression of one gene by another.
Hypostasis (option B) is not a term commonly used in genetics and does not describe the described phenomenon.
Incomplete dominance (option D) refers to a situation where the heterozygous genotype results in an intermediate phenotype, blending the traits of both alleles. It does not involve the suppression of one gene by another.
Most Upvoted Answer
When the activity of one gene is suppressed by the activity of a non-a...
Understanding Epistasis
Epistasis is a crucial concept in genetics that describes the interaction between non-allelic genes, where the effect of one gene is suppressed by another. Here’s a detailed look at this phenomenon:
Definition of Epistasis
- Epistasis occurs when the expression of one gene masks or modifies the expression of another gene that is not its allele.
- This interaction is significant in determining phenotypes, especially in polygenic traits.
Types of Epistasis
- Recessive Epistasis: The presence of two recessive alleles at one gene locus masks the expression of alleles at another locus.
- Dominant Epistasis: A dominant allele at one gene locus can mask the expression of alleles at a different locus.
Examples of Epistasis
- In Labrador Retrievers, the coat color is affected by two genes: one for pigment (B) and one for color (E). The E gene must be dominant for the B gene to express black or brown color. If the E gene is homozygous recessive (ee), the dog will be yellow regardless of the B gene’s alleles.
Importance of Epistasis
- Epistasis plays a significant role in genetic diversity and evolution, influencing traits in organisms.
- It helps in understanding complex traits and diseases in genetics, which often involve multiple genes interacting.
In summary, epistasis is a fundamental genetic concept where the activity of one gene can suppress another non-allelic gene’s activity, leading to variations in phenotype expression. Understanding this interaction is essential for studying inheritance patterns and genetic traits.
Epistasis is a crucial concept in genetics that describes the interaction between non-allelic genes, where the effect of one gene is suppressed by another. Here’s a detailed look at this phenomenon:
Definition of Epistasis
- Epistasis occurs when the expression of one gene masks or modifies the expression of another gene that is not its allele.
- This interaction is significant in determining phenotypes, especially in polygenic traits.
Types of Epistasis
- Recessive Epistasis: The presence of two recessive alleles at one gene locus masks the expression of alleles at another locus.
- Dominant Epistasis: A dominant allele at one gene locus can mask the expression of alleles at a different locus.
Examples of Epistasis
- In Labrador Retrievers, the coat color is affected by two genes: one for pigment (B) and one for color (E). The E gene must be dominant for the B gene to express black or brown color. If the E gene is homozygous recessive (ee), the dog will be yellow regardless of the B gene’s alleles.
Importance of Epistasis
- Epistasis plays a significant role in genetic diversity and evolution, influencing traits in organisms.
- It helps in understanding complex traits and diseases in genetics, which often involve multiple genes interacting.
In summary, epistasis is a fundamental genetic concept where the activity of one gene can suppress another non-allelic gene’s activity, leading to variations in phenotype expression. Understanding this interaction is essential for studying inheritance patterns and genetic traits.
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When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known asa)Pseudo-dominanceb)Hypostasisc)Epistasisd)Incomplete dominanceCorrect answer is option 'C'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known asa)Pseudo-dominanceb)Hypostasisc)Epistasisd)Incomplete dominanceCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known asa)Pseudo-dominanceb)Hypostasisc)Epistasisd)Incomplete dominanceCorrect answer is option 'C'. Can you explain this answer?.
When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known asa)Pseudo-dominanceb)Hypostasisc)Epistasisd)Incomplete dominanceCorrect answer is option 'C'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known asa)Pseudo-dominanceb)Hypostasisc)Epistasisd)Incomplete dominanceCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known asa)Pseudo-dominanceb)Hypostasisc)Epistasisd)Incomplete dominanceCorrect answer is option 'C'. Can you explain this answer?.
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