@Lecture05_9

@Lecture05_9 - 1 1 Fall 2009 GEL 107 Lecture 05...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 1 Fall 2009, GEL 107: Lecture 05 PALEOBIOLOGY 2 Species and Speciation 3 A species A natural kind A man-made kind of anything 4 Organismal species Naturally defined group of organisms that reflects blood- relationships “Unit of evolution” 5 I look at the term species as one arbitrarily given, for the sake of convenience, to a set of individuals closely resembling each others. Charles Darwin, quoted in the textbook 6 What is the biological species concept? What is the phylogenetic species concept? What is the evolutionary species concept? What are allopatric and sympatric speciation? So what is a species? What are cline and ring species? How does the time axis affect the concept? Questions 7 Groups of actually or potentially interbreeding populations, which are reproductively isolated from other such groups A definition Gene pool Gene flow 8 Restricted to sexually reproducing organisms Ambiguity in interbreeding “potential” Viable and fertile hybrids Problems Natural Condition 9 Hybrid zone 2 10 Ligers 11 Tigons 12 ht p:/ www.barbarylion.com /Al %20About%20Lions.htm Lion 13 ht p:/ hem .bredband.net/b270760/Korkeasaari/tigerkarta.htm Tiger 14 ht p:/ hem .bredband.net/b270760/Korkeasaari/tigerkarta.htm Tiger Lion 15 What is the biological species concept?...
View Full Document

This note was uploaded on 11/22/2009 for the course GEL 107 taught by Professor Motani during the Fall '08 term at UC Davis.

Page1 / 7

@Lecture05_9 - 1 1 Fall 2009 GEL 107 Lecture 05...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online