Difference between Allopatric and Sympatric Speciation

Allopatric vs Sympatric speciation
The process of origin of new species is called speciation. The formation of new species from existing species can occur in two ways; sympatrically or allopatrically.

Allopatric speciation (‘Allo’: different, ‘patris’: country)
  • Speciation occurs when the population becomes separated by geographical barriers like mountains, rivers etc.
  • Thus the chance of interbreeding between these populations is greatly reduced.
  • Each population acquires mutations by natural selection to adapt to the new environment. After a long time, reproductive isolation sets in separating two populations into two species.
  • Geographical isolation leads to reproductive isolation and speciation.
  • This is the most common form of speciation.

Sympatric speciation (‘Sym’: same or together, ‘patris’: country)
  • It is the formation of two or more species from a single ancestral species all occupying the same geographical area.
  • In sympatric speciation, the populations are not geographically separated.
  • Sympatric speciation often occurs through polyploidy. A diploid individual cannot interbreed with tetraploid individual leading to reproductive isolation.
  • This type of speciation is rare and occurs often in plants as self fertilization and polyploidy is common in plants compared to animals.
Sharing is Caring ..... Please take 5 seconds to Share. Thank you...


H S Upadhyay said...

very nicely explained with pictures/diagrams.

Anonymous said...

understandably and thoroughly

Post a Comment

We Love to hear from U :) Leave us a Comment.

Your Comments will Definitely Make a Difference in Improving this Site

Thanks for Visiting.....

Related Posts Plugin for WordPress, Blogger...

Follow by Email

2015 Major Differences | MajorDifferences.com. Our Partners Biology Exams 4 U, Biology Quizzes, MCQ Biology