Chapter 24 Species & Speciation. Slide 2 of 25 Chapter 24 in a nutshell Microevolution v. Macroevolution Speciation Prezygotic Postzygotic Gradualism.
Macroevolution
What is a species? Its not as straightforward a question as most believe. Macroevolution and Speciation Evolution creates (and destroys) species, but …
Pre-zygotic barriers prevent mating or egg fertilization if members of different species try to mate. Post-zygotic barriers zygotes may arise, but develop.
Chapter 24 The Origin of Species. Macroevolution is the origin of new taxonomic groups, as opposed to microevolution, which is genetic variation between.
