Assertion (A) : The closer two loci reside along the axis of the chromosome, the more likely they are to be inherited together.
Reason (R) : The farther apart two linked loci, the more likely a random crossover event will occur in between them.
In the light of the above statements, choose the most appropriate answer from the options given below :
Assertion (A) Genetic Linkage
The statement asserts that loci (gene locations) closer together on a chromosome are more likely to be inherited jointly. This principle is known as genetic linkage. Linked genes tend to stay together during meiosis and are inherited as a package. Therefore, Assertion (A) is factually correct.
Reason (R) Crossover Frequency
The statement posits that the greater the distance between two linked loci, the higher the probability of a crossover event occurring between them during meiosis. Crossovers shuffle genetic material. The likelihood of a crossover between two specific points on a chromosome is directly proportional to the distance separating them. Thus, Reason (R) is also factually correct.
Linkage Explanation Analysis
The core concept is understanding the relationship between gene distance, crossover frequency, and inheritance patterns.
- Assertion (A) describes the observation: closeness leads to joint inheritance.
- Reason (R) provides the underlying mechanism: distance influences crossover frequency.
- A higher crossover frequency between two loci means they are less likely to be inherited together. Conversely, a lower crossover frequency (due to shorter distance) means they are more likely to be inherited together.
- Therefore, Reason (R) correctly explains why Assertion (A) is true.
Conclusion: Selecting the Best Option
Based on the analysis:
- Assertion (A) is correct.
- Reason (R) is correct.
- Reason (R) provides the correct explanation for Assertion (A).
This corresponds to Option 1.
Option 1: Both (A) and (R) are correct and (R) is the correct explanation of (A).
Similar Questions
- Blue-white screening is based on the activity of :
- Which of the following is not a feature of RNA ?
- RNAi mediated RNA interference mediates which of the following ?
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Some microorganisms can use nitrate as a terminal electron acceptor under anaerobic conditions.
Reason (R) : Nitrate can be fully reduced to ammonia in the process of denitrification.
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : A cDNA library contains only expressed genes.
Reason (R) : A cDNA library is made from the mRNA molecules of a cell population.
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Electrophoretic procedures are generally not used to purify proteins.
Reason (R) : Electrophoresis is an analytical method.
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : E.coli is widely used as a host in RDT.
Reason (R) : E.coli grows rapidly and its genetics are well understood.
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes.
Reason (R) : Along the mountain gradients, biodiversity is normally greater in the lower altitudes as compared to the higher altitudes.
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Ruminants are able to digest complex plant material.
Reason (R) : The Rumen community contains a community of microorganisms producing a variety of enzymes that can degrade plant polymers.
In the light of the above statements, choose the most appropriate answer from the options given below : - Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : IgG is the first immunoglobulin produced during a primary immune response.
Reason (R) : IgM has a pentameric structure that allows efficient activation of the complement system.
In the light of the above statements, choose the most appropriate answer from the options given below :
Important Questions from Mixed Topic (CUET PG)
- Kalpsutra, the illustrated canonical text is from:-
- The Harappan city almost exclusively devoted to craft production was-:
- Mohandas Karamchand Gandhi launched quit India movement after the failure of:-
- The "Objectives Resolution" was introduced in constituent assembly by:-
- Who among the following was not a member of the constituent assembly:-
