Slide 1Starr & Taggart – 11 th Edition Evolutionary Patterns, Rates, and Trends AP Biology: Chapter 19 Slide 2 Key Concepts: All species that have ever lived are related…

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Incipient speciation revealed in Anastrepha fraterculus (Diptera; Tephritidae) by studies on mating compatibility, sex pheromones, hybridization, and cytology CARLOS CÁCERES1,…

Slide 1 Interspecific Variation in the Female Sexual Attractiveness Pheromone of Garter Snakes Emily Uhrig Mentors: Dr. Robert Mason, Oregon State University Dr. Michael…

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…

BIOL2007 (B242) - BIODIVERSITY AND SPECIES Next lecture: how species evolve. Today: (1) nature of species (2) whether speciation differs from microevolution. What are species?…

In past centuries, species were defined by apparent similarities to other known species– i.e., by morphological comparisons Similar organisms were grouped together, and…

Speciation Formation of New Species Formation of Species Formation of new species is called speciation. Two or more new species arise from a previous species. Darwinâs Finches…

5 10 15 20 25 Types of Selection Hardy Weinberg Speciation Prezygotic vs. Postzygotic Grab Bag 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 This is the only force…

Chapter 18 Speciation What is a Species? The morphological species concept expresses the following: Species, in its simplest interpretation means âkindâ The biological…