'Gene flow' presentation slideshows

T. Dobzhansky (geneticist)

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Forces that Drive Evolution

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Chapter 17 pictures

Chapter 17 pictures. prokaryotes. Fig 17.3 Gene expression. eukaryotes. Figure 17.4. Question 17.1. RNA polynucleotide chain is single-stranded. Structure of RNA Nucleotides. Transcription. Fig 17.7b. Fig 17.8: Initiation of Transcription begins at the Promoter Region.

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Population Genetics

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M ole c ul ar markers in plant systematics and population biology

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16 Evolution of Populations and Speciation

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Chapter 13

Chapter 13. Origin and Dispersal of Modern Humans. Chapter Outline. Approaches to Understanding Modern Human Origins The Earliest Discoveries of Modern Humans Technology and Art in the Upper Paleolithic Summary of Upper Paleolithic Culture. Homo sapiens sapiens.

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BIOLOGY NOTES EVOLUTION PART 2 PAGES 326-346

BIOLOGY NOTES EVOLUTION PART 2 PAGES 326-346. Standards:. 6.3. 6.4. ____ Describe how mutation and genetic recombination increases genetic variation ____ Describe how biological diversity is increased by the origin of new species and how it is decreased by the process of extinction

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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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Chapter 18 Population Genetics Genetic variation, detection, concepts, sources, and forces

Chapter 18 Population Genetics Genetic variation, detection, concepts, sources, and forces. What is population genetics?. Analyzes the amount and distribution of genetic variation in populations and the forces that control this variation

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Chapter 4: Speciation and Phylogeny

Chapter 4: Speciation and Phylogeny. Macroevolution Species and Speciation Phylogenies: Evolutionary Trees. Biological Species. Reproductive isolation Gene flow within species No gene flow between species Allopatric speciation: results from geographic/environmental isolation

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Chapter 23 Notes: Population Genetics

Chapter 23 Notes: Population Genetics . DEFINITIONS. POPULATION : a localized group of individuals belonging to the same species SPECIES : a group of populations whose individuals have the potential to interbreed and produce fertile offspring (viable)

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Activity 10

Activity 10. What Is a Species?. Write the questions below and your answers in your science notebook. a. What is a species? b. Some examples of species are: _______________________________. c. How do biologists decide if two populations are of the same or different species?.

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Conservation and Population Genetics

Conservation and Population Genetics. Allele Frequencies. The total number of copies of an allele divided by (for mammals) 2N. . Aa AA aa Aa AA aa Aa Aa Aa Aa AA aa AA. p = 14/26 = 0.53; q = 12/26 = 0.47 . Heterozygosity. Aa AA aa Aa AA aa Aa Aa Aa Aa AA aa AA.

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The Nature of Mammalian Species

The Nature of Mammalian Species. The most common species concept is (still) the Biological Species Concept. Species - A group of populations that is reproductively isolated from other groups. The study of speciation has classically focused on the evolution

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Microevolution

Microevolution. Microevolution is the Change in allele frequency due to one of the following processes: Natural Selection Mutations Genetic Drift Gene flow. Types of Natural selection. Direction Selection Selection favors one of the extreme types in the population.

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Evolution Vocabulary

Evolution Vocabulary. Evolution. Evolution is defined biologically as: descent with modification AKA a genetic change in a population over time. Important Concepts to understand: Evolution as defined above does not happen in individuals- it happens to populations

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Natural Selection and Gene Flow

Natural Selection and Gene Flow. Allie & Alena. Natural Selection. Individuals in a population have different characteristics based on their heritable traits Those with the most favorable traits survive more frequently to pass on these traits to their offspring. Natural Selection.

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Create a Creature!

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Example from Dr. Mark Fishbein

Example from Dr. Mark Fishbein. Which of these critters are most closely related?. alligator. gila monster. purple gallinule. ?. gopher tortoise. kingsnake. Phylogeny. Branching history of evolutionary lineages New branches arise via speciation

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