evolution_notes_copy
... An organism which is the shared ancestor of two (or more) different descendant groups of organisms. ...
... An organism which is the shared ancestor of two (or more) different descendant groups of organisms. ...
Name________________ Where does variation come from
... Name________________ Where does variation come from? - Guided Notes _____________ are controlled by genes. Individuals within a population are not _____________, there is _______________ or differences within the populations genes. ________________________: process by which organisms with traits bes ...
... Name________________ Where does variation come from? - Guided Notes _____________ are controlled by genes. Individuals within a population are not _____________, there is _______________ or differences within the populations genes. ________________________: process by which organisms with traits bes ...
17.2 Evolution as Genetic Change in Populations
... remain constant unless one or more factors cause those frequencies to change. These factors include: non-random mating, small population size, immigration or emigration, mutations, and natural selection. Populations are rarely in genetic equilibrium. Most of the time, evolution is occurring. For exa ...
... remain constant unless one or more factors cause those frequencies to change. These factors include: non-random mating, small population size, immigration or emigration, mutations, and natural selection. Populations are rarely in genetic equilibrium. Most of the time, evolution is occurring. For exa ...
Revision on Genetics
... • ALL MUST Know the difference between genetic and environmental variation • MOST SHOULD be able to describe the structure of genetic material • SOME COULD explain selective breeding, natural selection and extinction ...
... • ALL MUST Know the difference between genetic and environmental variation • MOST SHOULD be able to describe the structure of genetic material • SOME COULD explain selective breeding, natural selection and extinction ...
Student notes for selection lecture
... Population genetics: study of evolution from a genetic point of view. Genetic material of organisms consists of many alleles (variations) of many genes that code for various traits. Smallest unit at which evolution occurs. Draw a picture of the bell curve in the box below: What does the bell c ...
... Population genetics: study of evolution from a genetic point of view. Genetic material of organisms consists of many alleles (variations) of many genes that code for various traits. Smallest unit at which evolution occurs. Draw a picture of the bell curve in the box below: What does the bell c ...
PowerPoint slides
... future personal benefit • Attention, possible mating opportunities, resources, status • “Donor” gains more than he/she sacrifices • Not basic altruism ...
... future personal benefit • Attention, possible mating opportunities, resources, status • “Donor” gains more than he/she sacrifices • Not basic altruism ...
Microevolution involves the evolutionary changes within a population.
... founder effect occurs when combinations of alleles occur at a higher frequency in a population that has been isolated from a larger population. ...
... founder effect occurs when combinations of alleles occur at a higher frequency in a population that has been isolated from a larger population. ...
Evolutionary Concepts I. The Theory of Evolution Evolution is a
... Coevolution happens when two different species are closely dependent on each other and interact with each other on a regular basis, so that the evolution of one affects the evolution of the other. A great example of this is flowing plants and pollinators. Most plants have evolved along with the poll ...
... Coevolution happens when two different species are closely dependent on each other and interact with each other on a regular basis, so that the evolution of one affects the evolution of the other. A great example of this is flowing plants and pollinators. Most plants have evolved along with the poll ...
Evolutionary Concepts
... will die and the two resistant ones will survive. When they mate, many or all of their offspring will have the gene for pesticide resistance and after a few new generations have reproduced; the whole population of beetles will be resistant. The farmer is then forced to find a new chemical to contro ...
... will die and the two resistant ones will survive. When they mate, many or all of their offspring will have the gene for pesticide resistance and after a few new generations have reproduced; the whole population of beetles will be resistant. The farmer is then forced to find a new chemical to contro ...
2.2 selection
... Organisms with the best adaptations are more likely to compete successfully or escape predators and therefore live to reproduce. They pass on their favourable alleles to the next generation. Less adapted organisms will be less successful at competing and die before reproducing, so their alleles and ...
... Organisms with the best adaptations are more likely to compete successfully or escape predators and therefore live to reproduce. They pass on their favourable alleles to the next generation. Less adapted organisms will be less successful at competing and die before reproducing, so their alleles and ...
Chapter 11: The Evolution of Populations
... Founder Effect: genetic drift that occurs after a small number of individuals colonize a new area ...
... Founder Effect: genetic drift that occurs after a small number of individuals colonize a new area ...
Sexual Selection
... Fisher’s Runaway process • If females exhibit preference for a male trait • And selection does not act on females • Then their sons and daughters will carry genes for both the preference and the trait • This creates a genetic correlation between the preference and trait • And leads to geometric inc ...
... Fisher’s Runaway process • If females exhibit preference for a male trait • And selection does not act on females • Then their sons and daughters will carry genes for both the preference and the trait • This creates a genetic correlation between the preference and trait • And leads to geometric inc ...
On the Power of Humans Over Natural Selection Evolution through
... evidenced by people like Rod Stewart who, at 66 years old, became a father for the eighth time when most men have been grandfathers once or twice over. Medicine is not the only factor which has made artificial selection, rather than natural, the mode of human development. Another is found in human ...
... evidenced by people like Rod Stewart who, at 66 years old, became a father for the eighth time when most men have been grandfathers once or twice over. Medicine is not the only factor which has made artificial selection, rather than natural, the mode of human development. Another is found in human ...
AP Biology Jones The components to the Hardy
... - Small populations don’t have many alleles in gene pool, so losing large number alleles will drastically affect allele frequencies. • Decreased genetic diversity • Decreased genetic diversity ...
... - Small populations don’t have many alleles in gene pool, so losing large number alleles will drastically affect allele frequencies. • Decreased genetic diversity • Decreased genetic diversity ...
Microevolution involves the evolutionary changes within a population.
... AN EXAMPLE OF GENETIC DRIFT IS THE BOTTLENECK ...
... AN EXAMPLE OF GENETIC DRIFT IS THE BOTTLENECK ...
Basics of Evolutionary Theory
... Population: all the individuals of a species inhabiting a particular locality or region in which they find mates. If two groups of individuals belong to one species and live in the same region, but do not interbreed (because of geographical or behavioral barriers), then they comprise separate popula ...
... Population: all the individuals of a species inhabiting a particular locality or region in which they find mates. If two groups of individuals belong to one species and live in the same region, but do not interbreed (because of geographical or behavioral barriers), then they comprise separate popula ...
UNIT PLAN- DNA and MITOSIS
... 1. Describe the differences between natural selection and artificial selection. 2. Explain how Darwin’s finches and tortoises show speciation. 3. Explain what caused the speciation of salamanders in California. 4. Explain how reproductive isolation, ecological competition, changes in a gene pool, an ...
... 1. Describe the differences between natural selection and artificial selection. 2. Explain how Darwin’s finches and tortoises show speciation. 3. Explain what caused the speciation of salamanders in California. 4. Explain how reproductive isolation, ecological competition, changes in a gene pool, an ...
Plant Ecology
... variation, selecting against traits that are poorly adapted to the existing environment ...
... variation, selecting against traits that are poorly adapted to the existing environment ...
A population
... phenotypes are more likely to survive and produce more offspring. Thus, passing traits to subsequent generations. Darwin’s idea was that resources are limited and that there is competition for those resources. Natural selection is a major mechanism of evolution. Population is the smallest unit in ...
... phenotypes are more likely to survive and produce more offspring. Thus, passing traits to subsequent generations. Darwin’s idea was that resources are limited and that there is competition for those resources. Natural selection is a major mechanism of evolution. Population is the smallest unit in ...
HW20PolygenicEvo2014
... Biological evolution is defined as a change in gene frequency over time. We can measure this change for simple dominant and recessive traits using the Hardy-Weinberg equilibrium. However, most traits are not based on simple dominant and recessive relationships—most are dependent upon more than one g ...
... Biological evolution is defined as a change in gene frequency over time. We can measure this change for simple dominant and recessive traits using the Hardy-Weinberg equilibrium. However, most traits are not based on simple dominant and recessive relationships—most are dependent upon more than one g ...
A105 exam 1 essay 3
... advancements are, in fact, natural and contribute to natural selection – curable diseases allow the victim to live, and not-curable still die. That may be a bit different than traditional natural selection, but it is only a way natural selection has kept current with ...
... advancements are, in fact, natural and contribute to natural selection – curable diseases allow the victim to live, and not-curable still die. That may be a bit different than traditional natural selection, but it is only a way natural selection has kept current with ...
Evolution - Home - Mr. Wright's Class Website
... are the ones who survive. The weak will perish. ...
... are the ones who survive. The weak will perish. ...
Group selection
Group selection is a proposed mechanism of evolution in which natural selection is imagined to act at the level of the group, instead of at the more conventional level of the individual.Early authors such as V. C. Wynne-Edwards and Konrad Lorenz argued that the behavior of animals could affect their survival and reproduction as groups.From the mid 1960s, evolutionary biologists such as John Maynard Smith argued that natural selection acted primarily at the level of the individual. They argued on the basis of mathematical models that individuals would not altruistically sacrifice fitness for the sake of a group. They persuaded the majority of biologists that group selection did not occur, other than in special situations such as the haplodiploid social insects like honeybees (in the Hymenoptera), where kin selection was possible.In 1994 David Sloan Wilson and Elliott Sober argued for multi-level selection, including group selection, on the grounds that groups, like individuals, could compete. In 2010 three authors including E. O. Wilson, known for his work on ants, again revisited the arguments for group selection, provoking a strong rebuttal from a large group of evolutionary biologists. As of yet, there is no clear consensus among biologists regarding the importance of group selection.