Featured Organisms: Wheat and its relatives
(Triticum spp., wild grass Aegilops spp.)
Links: 1 - 2
- 3
- 4
- 5
Notes for Understanding Evolution - Chapters 10 and 11
Click link to return to Biology 404
Schedule
or back to Chapter 10 or ahead to Chapter
12
General guide on these review questions here
Notes for Chapter 11: Cataclysmic Evolution
Introduction
Key Terms: polyploidy
I. Wheat
RQUE11.1: Why does commercially grown bread wheat have greater numbers of chromosomes than its closest wild plant relatives?
II. Origin of Wheat Species
Featured Organisms: Wheat and its relatives (Triticum spp., wild grass Aegilops spp.)
Links: 1 - 2 - 3 - 4 - 5
III. Mechanism of Speciation
by Polyploidy
Key Terms: haploid vs. diploid vs. tetraploid vs. hexaploid (polyploid)
RQUE11.2: What errors in meiosis most likely could account for the polyploid nature of wheat?
IV. Experimental Verification
RQUE11.3: How was bread wheat first convincingly shown to be a hexaploid species?
V. Cotton and Continental Drift
Featured Scientist: Alfred Wegener
Links: 1 - 2 - 3 - 4 - 5 - 6
RQUE11.4: How is the current distribution of cotton thought to be related to Alfred Wegener's notion of continental drift?
Click link to return to Biology 404
Schedule
or back to
Chapter 10 or ahead to Chapter
12
This page created 8/16/01 © D.J. Eernisse, Last Modified 2/25/03, Links Last Completely Checked 2/25/03
