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Lecture 13

BIOL 1F90 Lecture 13: BIOL 1F90 lecture 13 winter 2016


Department
Biological Sciences
Course Code
BIOL 1F90
Professor
Fiona Hunter
Lecture
13

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Monday, February 1, 2016
BIOL 1F90
Lecture 13
Chapter 23- Origin of Species
Etymology of Terms
-Inter: between, among
-Macro: large, can be seen with naked eye
-Phylo: tribe, race, phylum
-Post: behind, in the rear
-Pre: earlier than
-Zygote: diploid cell created by fertilization
Learning Outcomes
-biological species concepts
-compare and contrast prezygotic and post zygotic isolating mechanisms
-dierentiate between anagenesis and cladogenesis
-describe how allopatric speciation can occur
-outline two dierent mechanisms of sympatric speciation
-compare and contrast concepts of gradualism and punctuated equilibrium
-describe how the spatial expression of genes, such as BMP4 and Gremlin, aects pattern
formation
-explain importance of Hox genes and body plan of an animal species
-compare allometric growth and paedomorphism. How do these concepts relate to
species formation
-Species
-a group of organisms that maintains a distinctive set of attributes in nature
-Macroevolution
1
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