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#allopatric speciation

2 public questions tagged with this topic.

Basic Evolution

Which speciation involves geographic isolation?

Allopatric reflects key principle in quiz on section e solved pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Allopatric aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Allopatric fits helps integrate natural selection, environment.

Ref: Futuyma, Evolution, Variation, Drift, and Speciation Concepts.

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SPECIATION

Allopatric speciation involves:

Allopatric speciation occurs when geographic barrier such as mountain range, river or canyon splits population preventing gene flow, allowing independent accumulation of mutations, drift and local adaptation. Over time reproductive isolation evolves via Dobzhansky-Muller incompatibilities. Grand Canyon squirrels and Darwin's finches illustrate. Geographic isolation is primary requirement, contrasting with sympatric mode. Hence Geographic isolation is essential condition initiating allopatric divergence and biodiversity. This concept integrates genetics, ecology and molecular evidence, frequently tested in NEET, GATE and CSIR-NET, highlighting links between genotype, phenotype and environment.

Ref: Coyne & Orr, Speciation, Chapter 1: Species Concepts and Isolation.

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