Chapter 29, Problem 9CONQ

Summary Introduction

To review:

The reason behind alloploids being reproductively isolated from two original species from which, they were derived and themusually being sterile, whereas, allotetraploid is commonly fertile.

Introduction:

The formation of a new species by splitting of ancestral species lineage in evolution is known as cladogenesis. This process occurs due to several factors like; the environmental changes that cause extinction of the species, species migrating to new geographical locations, opening of ecological niches for the surviving species, and due to the bottleneck effect or founders effect.