Question

Which of the following best describes sympatric speciation?

• A. Speciation that occurs due to geographic isolation
• B. Speciation that occurs in the same geographic region without physical separation
• C. Speciation that occurs due to migration to a new habitat
• D. Speciation that occurs through gradual accumulation of small changes over time

Hint:

Sympatric speciation occurs without physical barriers, often driven by ecological, behavioral, or genetic factors within the same geographic region.

Answer 1

The Correct Option is B

Step 1: Definition of sympatric speciation Sympatric speciation refers to the process by which new species evolve from a single ancestral species while inhabiting the same geographic region. Unlike allopatric speciation, there is no physical separation between populations. 

Step 2: Mechanism of sympatric speciation Sympatric speciation often occurs due to factors such as: Behavioral isolation Ecological isolation (e.g., habitat preferences within the same region) Polyploidy in plants Genetic divergence without physical barriers 

Step 3: Elimination of incorrect options (A) Incorrect: Geographic isolation is a characteristic of allopatric speciation. (C) Incorrect: Migration to a new habitat implies geographic separation, which is not sympatric. (D) Incorrect: Gradual accumulation of changes is part of the speciation process but does not define sympatric speciation specifically.