Biology: How Life Works
3rd Edition
ISBN: 9781319017637
Author: James Morris, Daniel Hartl, Andrew Knoll, Melissa Michael, Robert Lue, Andrew Berry, Andrew Biewener, Brian Farrell, N. Michele Holbrook
Publisher: Macmillan Higher Education
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Chapter 21.2, Problem 7SAQ
Summary Introduction
A species indicates a closed gene pool, in which various alleles are shared only among the members of that species. The factors that are responsible for causing reproductive isolation are normally differentiated into two categories. They are post-zygotic isolating factors and pre-zygotic isolating factors, and this categorization is based on when they act.
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