'Original population' diaporamas de présentation

Biodiversity

Biodiversity. ORIGINS OF LIFE. 1 billion years of chemical change to form the first cells, followed by about 3.7 billion years of biological change. . Figure 4-2. Biological Evolution. This has led to the variety of species we find on the earth today. Figure 4-2.

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Evolution of Living Things

Evolution of Living Things. Terms to know:. Species - a group of organisms that can mate and produce fertile offspring Population - all the members of a particular species living in a given area

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Chapter 24: The Origin of Species

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Evolution Learning Targets 1-17

Evolution Learning Targets 1-17. Guided Reading Review. Charles Darwin. LT 1. HMS Beagle. Born in England in 1809 A Naturalist (studied nature) Took a 5yr voyage on a ship called the HMS Beagle to study the organisms encountered on the journey

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Points to remember about Natural Selection

Points to remember about Natural Selection. Populations evolve, but individuals do not . I.E., Natural selection acts on the level of the individual, but populations are the smallest unit that can evolve. Natural selection only works on heritable variations , not acquired traits.

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11.1 KEY CONCEPT A population shares a common gene pool.

11.1 KEY CONCEPT A population shares a common gene pool. Genetic variation in a population increases the chance that some individuals will survive. Genetic variation leads to phenotypic variation. Phenotypic variation is necessary for natural selection.

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Unit #7 Exam Review Quiz

Unit #7 Exam Review Quiz. Grade:. 12th. Aquatic Science. Subject:. 02/12/2013. Date:. 1. A species of fish living in a coral reef changes the color of its scales (over generations) from yellow to blue. This is an example of. A. microevolution. B. macroevolution. C. co-evolution.

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MICROEVOLUTION

MICROEVOLUTION. HARDY WEINBERG EQUATIONS Ms.Kim H. Biology. The Smallest Unit of Evolution. Darwin difficulty = what is the mechanism of natural selection?? How does it occur?? Genetic basis

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G5 Population Ecology

G5 Population Ecology. There are organisms that display extreme r- or K-strategies, but most organisms have life histories that are intermediate on the continuum, displaying some r-traits but also some K-traits.

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Chapter 16: Evolution of Populations

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Patterns of Evolution

Patterns of Evolution. Essential Questions: 1. What are the mechanisms that lead to evolutionary change over time? 2. How do different species evolve? 3. Does evolutionary change occur in our lifetime?. A. Mechanisms of Change. Genetic Variation Mutations

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OUTLINE 22 Forces that disrupt HW equilibrium A. Effects of chance in small populations - genetic drift 1. Bottlenecks

OUTLINE 22 Forces that disrupt HW equilibrium A. Effects of chance in small populations - genetic drift 1. Bottlenecks 2. Founder effects B. Mutation C. Migration and gene flow D. Non-random mating E. Natural selection 1. Example: the peppered moth. Fig 23.3a. RR. Rr. rr.

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What causes evolution?

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Heredity Overview

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April 25 Computer Lab

April 25 Computer Lab. Use the powerpoint to take your notes! Play the games and fill in your paper! . Why is it called Natural selection?. Darwin saw how similar it was to artificial selection

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Speciation

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Speciation

Speciation. How do we get new species on Earth?. What is a species?. Remember: A species is a group of organisms that can breed and produce viable and fertile offspring. . Two animals are NOT the same species if they cannot mate and produce a living, fertile baby. How do new species form?.

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Unit #7 Quiz #4

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Reject H o Accept H o

Left Tailed Right Tailed Two tailed . Reject H o. Reject H o. Reject H o Accept H o. Accept H o Reject H o. Accept H o. http://library.beau.org/gutenberg/1/0/9/6/10962/10962-h/images/069.png.

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