MHT CET 202623 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 23 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Evolution
MHT CET 2026 · 23 April · Evening Shift · Biology · Evolution
Given below are two statements, one is labelled as Assertion (A)...
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Sympatric speciation occurs in a single population without geographical isolation.
Reason (R): The formation of species is due to reproductive isolation and mutation.
In light of the above statements, choose the correct answer from the options given below.
Assertion (A): Sympatric speciation occurs in a single population without geographical isolation.
Reason (R): The formation of species is due to reproductive isolation and mutation.
In light of the above statements, choose the correct answer from the options given below.
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true but (R) is NOT the correct explanation of (A).
- C(A) is true but (R) is false.
- DBoth (A) and (R) are false
Correct answer
B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
Step-by-step solution
Assertion (A) is true because sympatric speciation is defined as the evolutionary process where new species evolve from a single ancestral species while inhabiting the same geographic region. It occurs without geographical isolation.
Reason (R) is also true because the formation of new species (speciation) fundamentally depends on reproductive isolation, which prevents gene flow between populations, and mutations, which introduce genetic variations leading to divergence.
However, Reason (R) is a general statement about the mechanism of speciation and does not specifically explain why sympatric speciation occurs without geographical isolation (which is typically driven by factors like polyploidy, sexual selection, or microhabitat differentiation). Therefore, both (A) and (R) are true, but (R) is NOT the correct explanation of (A).
Answer: Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
Reason (R) is also true because the formation of new species (speciation) fundamentally depends on reproductive isolation, which prevents gene flow between populations, and mutations, which introduce genetic variations leading to divergence.
However, Reason (R) is a general statement about the mechanism of speciation and does not specifically explain why sympatric speciation occurs without geographical isolation (which is typically driven by factors like polyploidy, sexual selection, or microhabitat differentiation). Therefore, both (A) and (R) are true, but (R) is NOT the correct explanation of (A).
Answer: Both (A) and (R) are true but (R) is NOT the correct explanation of (A).