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Balancing selection

Pearson Ch. 23 - The Evolution of Populations

Subject: 
Biology
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Population genetics
Allele frequency
Dominance
Balancing selection
Genetic drift
Natural selection
Genetic variation
Hardy–Weinberg principle
Heterozygote advantage
evolution
Genotype frequency
Polymorphism

Ch 23: The Evolution of Populations Overview Microevolution is a change in allele frequencies in a population over generations Concept 23.1: Genetic variation makes evolution possible Genetic Variation Genetic variation among individuals is caused by differences in genes or other DNA segments Phenotype is the product of inherited genotype and environmental influences Natural selection can only act on variation with a genetic component Formation of New Alleles New genes and alleles can arise by mutation or gene duplication A mutation is a heritable change in nucleotide sequence of DNA Only mutations in cells that produce gametes can be passed to offspring A point mutation is a change in one base in a gene The effects of point mutations can vary:

AP Bio Reading Guide Answers CH 22-23

Subject: 
Biology
Rating: 
0
No votes yet
Tags: 
Population genetics
Genetics
Biology
Philosophy of biology
Genetic drift
Allele frequency
Hardy–Weinberg principle
Balancing selection
Heterozygote advantage
Zygosity
Genetic variation
Microevolution
health

Chapter 23: The Evolution of Populations This chapter begins with the idea that we focused on as we closed the last chapter: Individuals do not evolve! Populations evolve. The Overview looks at the work of Peter and Rosemary Grant with Gal?pagos finches to illustrate this point, and the rest of the chapter examines the change in populations over time. As in the last chapter, first read each concept to get the big picture and then go back to work on the details presented by our questions. Don?t lose sight of the conceptual understanding by getting lost in the details! Overview The Smallest Unit of Evolution ?One misconception is that organisms evolve, in the Darwinian sense, during their lifetimes

AP Bio Reading Guide Answers CH 23

Subject: 
Biology
Rating: 
0
No votes yet
Tags: 
Population genetics
Genetics
Biology
Philosophy of biology
Genetic drift
Allele frequency
Hardy–Weinberg principle
Balancing selection
Heterozygote advantage
Zygosity
Genetic variation
Microevolution
health

Chapter 23: The Evolution of Populations This chapter begins with the idea that we focused on as we closed the last chapter: Individuals do not evolve! Populations evolve. The Overview looks at the work of Peter and Rosemary Grant with Gal?pagos finches to illustrate this point, and the rest of the chapter examines the change in populations over time. As in the last chapter, first read each concept to get the big picture and then go back to work on the details presented by our questions. Don?t lose sight of the conceptual understanding by getting lost in the details! Overview The Smallest Unit of Evolution ?One misconception is that organisms evolve, in the Darwinian sense, during their lifetimes

Ap bio chapter 23 notes

Subject: 
Biology
Rating: 
0
No votes yet
Tags: 
Population genetics
Biology
Genetics
Philosophy of biology
Allele frequency
Genetic drift
evolution
Balancing selection
Microevolution
Heterozygote advantage
Genetic variation
Hardy–Weinberg principle
health

August 2013 Chapter 23 The Evolution of Populations 23.1 Population genetics provides a foundation for studying evolution Darwin and Mendel were contemporaries of the 19th century At the time both were unappreciated for their work Microevolution ? the generation-to-generation change in the population?s frequencies on alleles The Modern Synthesis The turning point for revolutionary theory was the development of population genetics Population Genetics ? Study on how a population changes over time Emphasizes genetic variation and recognizes the importance of quantitative characters Gene Pools and Allele Frequencies A population?s gene pool is defined by it?s allele frequencies (quantity of alleles in a population) Population ? a group of organism that belong to the same species
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