1. • Darwin’s Idea of Common Descent • Darwin’s Idea of Gradualism • Darwin’s Idea of Multiplication of Species • Darwin’s Idea of Natural Selection 2. Darwin’s…

1.Heliconius butterflies Real Example: Reproductive isolation + Sexual Selection + Natural Selection = sympatric species • live in various habitats in South America •…

1. POLYTYPIC SPECIES,POPULATION SYSTEMATICS ANDINFRASPECIFIC CATEGORIESSyst 1 to Sys 3 inclded in mid term 2. 3. Micro-evolution (by mutation, genetic drift, sexual selection,…

1. POLYTYPIC SPECIES,POPULATION SYSTEMATICS ANDINFRASPECIFICCATEGORIESSyst 1 to Sys 3 inclded in mid term 2. 3. Micro-evolution (by mutation, genetic drift, sexual selection,…

Slide 1Ecology Biological Communities NO species exists independently of other species Slide 2 The Community A group of populations of different species living close enough…

Slide 1 ASSORTATIVE MATING ASSORTATIVE DATING Evolutionary Mechanisms Slide 2 HARDY-WEINBERG EQUILIBRIUM (1)random mating (2)equal number of males and females (3)the population…

Slide 1 Lecture Ecology Chapter 53 ~ Community Ecology Slide 2 Community structure Community ~ an assemblage of populations living close enough together for potential interaction…

Slide 1 Lecture 10 Community Ecology Slide 2 Today’s topics What is community ecology? Interspecific relationships Community Structure and Function Exam 1 review Slide…

Slide 1 DNA barcoding: a new diagnostic tool for rapid species recognition, identification, and discovery James Hanken Museum of Comparative Zoology Harvard University, USA…

Slide 1 The Origin of Species Chapter 22 Slide 2 The Nature of Species The concept of species must account for two phenomena: –The distinctiveness of species that occur…