Question

Closely related morphologically similar, reproductively isolated sympatric populations are designated as

• A. Clones
• B. Clines
• C. Demes
• D. Sibling species

Answer 1

Answer: (D)

Sibling species

• Clones- They are genetically identical individual produced from the same parent cell.
  
• Clines- A cline is a gradual change in the phenotypes and genotypes of a species across a geographical gradient.
• Deme- A deme is a locally occurring subset of a population.
• Sibling species- Closely related morphologically similar, reproductively isolated sympatric populations

So, the correct option is 'Sibling species'.