'Adaptive radiation' diaporamas de présentation

Figure 4.3 (b)

Figure 4.3 (b). 24 The Origin of species. Species and Speciation. Fundamental unit of classification is the species. Species = a group of populations in which genes are actually, or potentially, exchanged through interbreeding. Problems

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Lecture 13 The source of novelty

Lecture 13 The source of novelty Lecture 13 The source of novelty Natural Selection Adaptive Radiation Mutations Hybridization Polyploidy Introduction Every species is adapted to a combination of factors (Phy. Environment, Range of variation, food supply, competition,

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A Swimming Mammaliaform from the Middle Jurassic and Ecomorphological Diversification of Early Mammals Qiang Ji, Zhe-Xi

A Swimming Mammaliaform from the Middle Jurassic and Ecomorphological Diversification of Early Mammals Qiang Ji, Zhe-Xi Luo, Chong-Xi Yuan, Alan R. Tabrum.

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Species and Speciation

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Chapter 16

Chapter 16. GENES AND VARIATION. 16.1 - Variation of Traits in a Population (gene pool). Population: all the members of the same species that live in a particular location at the same time and have the potential to interbreed.

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I. What are the 5 conditions that must remain constant for a population to be in evolutionary equilibrium? (try to name

POP QUIZ !. I. What are the 5 conditions that must remain constant for a population to be in evolutionary equilibrium? (try to name at least 4 of them). In this species, yellow (120) is dominant to blue (80). Using this population of butterflies and the Hardy- Weinberg law:

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Evolution and Biodiversity

Evolution and Biodiversity. Chapter 3 Pages 46-62. Evolution: All species descended from earlier ancestral species. Changing genetic make- up in a population over time. Accepted scientific explanation of how animals adapt and survive. Evolution and Adaptation.

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CHAPTER 16 EVOLUTION OF POPULATIONS

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Patterns In Evolution

Patterns In Evolution. Two Major Patterns Observed. MACROevolution And micro evolution. Macroevolution. Macroevolution: evolution of groups larger than an individual species. Takes a long period of time. Macro= looking at bigger sections of evolution.

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Patterns In Evolution

Patterns In Evolution. Two Major Patterns Observed. MACROevolution And micro evolution. Macroevolution. Macroevolution: evolution of groups larger than an individual species. Takes a long period of time. Macro= looking at bigger sections of evolution.

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The role of hybridisation in evolution

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Protist Evolution

Protist Evolution. BIOL 1407. Domain Eukarya is Sister Taxon to Domain Archaea. Prokaryotes vs. Eukaryotes. Evolution of Cytoskeleton. Some bacteria have proteins similar to actin & tubulin Actin = MreB Tubulin = FtsZ More info: http://www.palaeos.com/Eukarya/Eukarya.Origins.3.html

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Do Now:

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Leaving Certificate Biology Evolution & Variation iQuiz

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Mechanisms of Population Evolution

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DARWIN

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CHARLES DARWIN proposed natural selection to explain evolution published On the Origin of Species in 1859

CHARLES DARWIN proposed natural selection to explain evolution published On the Origin of Species in 1859. 13.1. VARIATION within a population. A varied population is a POLYMORPHIC population. Not here. Yes! . Why are the jaguars varied, but not the bacteria? .

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Speciation

Speciation. Level 1 Biological Diversity Jim Provan. Campbell: Chapter 24. Modes of speciation. Reproductive barriers form boundaries around species and the evolution of these barriers is the key biological event in the origin of new species:

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Natural Selection

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The Mesozoic Era

The Mesozoic Era. The Age of the Dinosaurs. The Triassic Period. This is the first Period in the Mesozoic Era. This is a geological period that extended from about 250 to 200 Mya. The end and the beginning of this period are marked by major extinction events.

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