'Isolated population' presentation slideshows

Speciation and Macroevolution

Speciation and Macroevolution. Chapter 20. Learning Objective 1. What is the biological species concept ? List two potential problems with the concept. Biological Species Concept. Species one or more populations members interbreed in nature produce fertile offspring

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MECHANISMS FOR EVOLUTION

MECHANISMS FOR EVOLUTION. CHAPTER 23. Objectives State the Hardy-Weinburg theorem Write the Hardy-Weinburg equation and be able to use it to calculate allele and genotype frequencies List the conditions that must be met to maintain Hardy Weinburg equilibrium. POPULATION SPECIES GENE POOL

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CHAPTER 14 The Origin of Species

CHAPTER 14 The Origin of Species. The origin of new species is called speciation. What is a species?. Similarities between some species and variation within a species can make defining species difficult The biological species concept defines a species as

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Members of a species show genetic variation . New alleles arise due to mutation .

The stages of evolution. Members of a species show genetic variation . New alleles arise due to mutation . 2. Individuals compete for resources such as food, or to survive disease or predation.

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