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Adaptive radiation Divergence Different traits in closely related species Common Ancestral species many species adapted to different habitats
Anoles diversity is most striking in the Caribbean
Adaptive Radiation Hawaiian honeycreepers Variation in color and bill shape is related to their habitat and diet
Cichlid fish of the Great Lakes of Africa. Species flocks fill different ecological niches.
HOMOLOGOUS STRUCTURES Front legs / arms of many animals have similar basic structures
Adaptive Radiation Disappearance of dinosaurs led to the adaptive radiation of mammals
Videos Wolfe: Adaptive radiation
Mechanisms of Evolution Convergent Divergent Adaptive radiation.
SBI3U WARM UP PROOFS of EVOLUTION.
The process by which many species evolve from a common ancestor is known as adaptive radiation The Original Common ancestor was under intense competition.
Chapter 15: Theory of Evolution Section 1: History of Evolutionary Thought Section 2: Evidence of Evolution Section 3: Evolution in Action.
Convergent evolution Evolution toward similar traits in unrelated species.
Patterns of Evolution. Sequential Evolution Changes in the gene pool from one generation to the next. Populations evolve gradually as they become adapted.
Adaptive Radiation Chapter 19. Ecological Niche The role an organism plays within a community Includes feeding, habitat, competitors, enemies etc Darwin’s.
$200 $300 $400 Final Jeopardy $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 Some More of That.
Patterns of Evolution Honors Biology- Mr. Wilmot.
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Darwin’s Theory of Evolution by Natural Selection Ms. Eramchuk.
Maryam Daman UOG.
Ecology and Evolution: the Creation of Biodiversity 1.
Evolution in Action. What is a Species? Morphological definition – a species is defined by its structure and appearance Biological definition – a species.
Evolution & Speciation. Evolution Evolution is the change in living things over long periods of time. It may occur through the processes of natural selection.
Ornithology: Introduction A little over 9,700 bird species live in the world today.
Evolution by Natural Selection Evolution is the change in inherited traits in a population/species from one generation to the next. Natural selection.
Patterns of Evolution. Macroevolution/Microevolution allele gene Both involve changes in allele frequencies in gene pools same basic Both work through.
Evidence of Evolution Chapter 15 Part II.
Looking for Patterns We’ve examined homologous and vestigial structures We’ve examined genetic drift and the founder effect Can we recognize larger patterns.
Patterns of Evolution Objectives:
Evolution (I). Alfred Russel Wallace “On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle.
The History of Life Section 17–4 Patterns of Evolution
Speciation Process by which a daughter species evolves from a parent species Genetic Divergence- when populations become reproductively isolated Species-population.
CHAPTER EVOLUTION & GENETIC VARIATION. DARWIN AND HIS STUDIES Charles Darwin proposed the idea of Evolution and Natural Selection Geologists.
Patterns in Evolution.
To Diverge means to spread apart. Think of other words that use the same root word. “Dissect, Divide, Divorce” Could two or more different species have.
Peppered Moth Evolution
Unit 8 Evolution Notes Part 4: Patterns of Evolution & Evidence for Evolution.
5.1 Evidence for evolution There is overwhelming evidence for the evolution of life on Earth.
Patterns of Speciation Diversify in Bursts (punctuational) Diversify slowly (gradual) Time No diversification (living fossil) Evolutionary Changes X X.
15.3 Evolution in Action. Standards CLE Explain how evolution contributes to the amount of biodiversity CLE Explain how genetic variation.
End Show Slide 1 of 25 Copyright Pearson Prentice Hall 17-4 Patterns of Evolution.
Copyright © 2009 Pearson Education, Inc. A species can be defined as a group of organisms whose members can breed and produce fertile offspring, but.
Types of Evolution BW HAVE SLATE, MARKER & ERASER OUT!!! Have HW paragraphs open on desk You are in a large empty room with a rough cement floor. You’ll.
Chapter 24 Macroevolution and Speciation. Macroevolution Macroevolution refers to any evolutionary change at or above the species level. Speciation is.
Speciation The formation of a new species. Speciation- occurs in isolated populations Geographic isolation leads to reproductive isolation Once the population.
Chapter 9 con’t March 14th. Founder Principle Founder principle – populations founded by a very small number of individuals generally contain a small.
Speciation, Reproductive Isolation, and Patterns of Evolution AP Biology Evolution IV.
Looking at the “natural” population below: Long neck Long neck Short neck.
Speciation and Extinction Rates. The history of Earth as been shaped by the rise and fall of groups of organisms Concept 23.2: The rise and fall of groups.
Evolution = change over time. Evolution Individuals do NOT evolve! Populations evolve. Evolution occurs at conception, when new combinations of DNA are.
Evolution of Populations. Population Genetics Natural Selection: nature selects which individuals survive and reproduce- Evolution: occurs as a populations.
Speciation Until recently, over 500 species of cichlid fishes lived in East Africa’s Lake Victoria Copyright © 2009 Pearson Education, Inc.
Darwin’s Finches are groups of birds with similar body shape and size but occupy their own niche and once had ancestral species. This is an example of.
Biodiversity, Ancestry, & Rate of Evolution (15.3)
Patterns of Evolution Chapter 17 Section 4.
15.3 Mechanisms of EVOLUTION. The formation of a new species 15.3 Speciation.
Chapter 16: Evolution of Populations
Evolution—The Theory and Its Supporting Evidence.
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