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Presentation ()
Presentation ()

... hand. You didn’t survive to reproduce. You will hand a green button to an individual that did survive to reproduce. This individual has made 2 offspring (of which you will now be one), therefore you obtain an identical copy of the genotype that they have after mating (from the deck). – If there are ...
Keystone Practice Questions #3 Gene Tech., Evolution
Keystone Practice Questions #3 Gene Tech., Evolution

... between  the  COII  gene  in  a  rat  and  that  of  two  other  animals  is  shown.     Part  A:    Based  on  the  data,  describe  a  possible  evolutionary  relationship  between  rats,  mice,  and   cows.   Part  B:    Desc ...
evolution - Fall River Public Schools
evolution - Fall River Public Schools

... Phenotypic variation reflects genetic variation. As you look at your classmates, their phenotypic variation may be caused by the either-or differences of a single gene or the range of variation typical of multiple genes. How many students have attached versus free ear lobes (an either-or difference ...
Natural Selection Introduction
Natural Selection Introduction

... being used, such as the human appendix, they gradually disappear. Eventually, people will be born without these parts. Lamarck believed that evolution happens according to a prearranged plan and that the results have already been decided. 13. Summarize Lamarck’s Theory using words and/or images ...
10.3 Theory of Natural Selection
10.3 Theory of Natural Selection

... Darwin compared what he learned about breeding to his ideas on adaptation. In artificial selection, features such as reversed neck feathers, large crops, or extra tail feathers are favored over generations only if these traits are liked by breeders. However, if a feature is not desirable or “useful ...
Chapter 22: Descent with Modification: A Darwinian View of Life
Chapter 22: Descent with Modification: A Darwinian View of Life

...  Artificial Selection, Natural Selection, and Adaptation o Artificial selection = humans modified other species over many generations by selecting and breeding individuals with desired traits o Saw connection between natural selection and capacity of organisms to overreproduce  Not all offspring s ...
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Natural Selection
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... there has never been more than a single species even though the rate of mutations is thought to be the same in both locations. Explain how each of the following could have played a role in the development of the many species of Galapagos finches: a. polyploidy b. genetic drift c. geographic isolatio ...
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Lecture 2 - Detecting Design

... food supplies and other resources • If some heritable traits are advantageous, these will accumulate in the population, and this will increase the frequency of individuals with adaptations • This process explains the match between organisms and their environment ...
Slide 1 - Cloudfront.net
Slide 1 - Cloudfront.net

... Evidence from geographical distributions (biogeography) if evolution did not occur, we would expect to find a given species everywhere that it could survive – in reality this does not occur example – Australia (a separate land mass for millions of years) has distinctive animals (marsupials and monot ...
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... Natural Selection • Natural selection is the process by which individuals that have favorable variations and are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do. • Darwin proposed that over many generations, natural selection causes t ...
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... A science teacher in Niagara County discovered an area in her lawn where nearly every dandelion had a stem less than 1 cm long. These short dandelions were replacing large amounts of grass in the lawn surrounding her house. They were growing much more thickly than the taller dandelions in other near ...
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Evolutionary Change without Selection

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Evolution - Effingham County Schools

... traits best suited to the environment have a higher survival rate, “descent with modification” ...
evolution - Laurel County Schools
evolution - Laurel County Schools

... • In any population, individuals have variations. (size, color, speed) • Individuals, with certain useful variations, such as speed or being able to avoid predators, will survive in their environment, passing those variations to the next generation. • This is often referred to as Survival of the Fit ...
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... What contribution did the photosynthetic organisms make to the Earth’s atmosphere? 10. What five conditions must be met for a population to be in Hardy-Weinberg equilibrium? 11. What incorrect ideas did Lamarck have about evolution? 12. What is the definition of natural selection? 13. What is the te ...
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... An interaction between members of two species which benets both; in strict terms, obligatory mutualism occurs when neither species can survive under natural conditions without the other. Mussel-shaped. The process by which living forms with traits that better enable them to adapt to specic environ ...
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... gives rise to new species that are adapted to new habitats and ways of life. ALLOPATRIC SPECIATION :- Origin of new species in geographically isolated populations. ANALOGOUS ORGANS :- Organs which are similar in appearance and perform similar functions but they are quite different in their origin an ...
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... Why? – Variation that aids an organisms chances of survival in its environment ...
Lecture PPT - Carol Lee Lab - University of Wisconsin–Madison
Lecture PPT - Carol Lee Lab - University of Wisconsin–Madison

... Traits are inherited via genes, and they do not “blend” with other genes (Darwin was wrong about this one) Genes mutate, resulting in different alleles Evolution occurs at the population level, due to a change in proportions of individuals with different genotypes Changes in proportion in a populati ...
EOC Evolution Study Guide
EOC Evolution Study Guide

... Mutations are changes in the bases (As. Cs. G. and Ts) of DNA molecules. Mutations can be caused by o Environment, such as physical damage to DNA (e.g., from ultraviolet light), or chemical damage from all sorts of carcinogens (cancer causing chemicals). o “Reading errors” when DNA duplicates. The w ...
Biology EOC Study Guide: Part 3, Evolution
Biology EOC Study Guide: Part 3, Evolution

... Mutations are changes in the bases (As. Cs. G. and Ts) of DNA molecules. Mutations can be caused by o Environment, such as physical damage to DNA (e.g., from ultraviolet light), or chemical damage from all sorts of carcinogens (cancer causing chemicals). o “Reading errors” when DNA duplicates. The ...
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Inclusive fitness

In evolutionary biology inclusive fitness theory is a model for the evolution of social behaviors (traits), first set forward by W. D. Hamilton in 1963 and 1964. Instead of a trait's frequency increase being thought of only via its average effects on an organism's direct reproduction, Hamilton argued that its average effects on indirect reproduction, via identical copies of the trait in other individuals, also need to be taken into account. Hamilton's theory, alongside reciprocal altruism, is considered one of the two primary mechanisms for the evolution of social behaviors in natural species.From the gene's point of view, evolutionary success ultimately depends on leaving behind the maximum number of copies of itself in the population. Until 1964, it was generally believed that genes only achieved this by causing the individual to leave the maximum number of viable direct offspring. However, in 1964 W. D. Hamilton showed mathematically that, because other members of a population may share identical genes, a gene can also increase its evolutionary success by indirectly promoting the reproduction and survival of such individuals. The most obvious category of such individuals is close genetic relatives, and where these are concerned, the application of inclusive fitness theory is often more straightforwardly treated via the narrower kin selection theory.Belding's ground squirrel provides an example. The ground squirrel gives an alarm call to warn its local group of the presence of a predator. By emitting the alarm, it gives its own location away, putting itself in more danger. In the process, however, the squirrel may protect its relatives within the local group (along with the rest of the group). Therefore, if the effect of the trait influencing the alarm call typically protects the other squirrels in the immediate area, it will lead to the passing on of more of copies of the alarm call trait in the next generation than the squirrel could leave by reproducing on its own. In such a case natural selection will increase the trait that influences giving the alarm call, provided that a sufficient fraction of the shared genes include the gene(s) predisposing to the alarm call.Synalpheus regalis, a eusocial shrimp, also is an example of an organism whose social traits meet the inclusive fitness criterion. The larger defenders protect the young juveniles in the colony from outsiders. By ensuring the young's survival, the genes will continue to be passed on to future generations.Inclusive fitness is more generalized than strict kin selection, which requires that the shared genes are identical by descent. Inclusive fitness is not limited to cases where ""kin"" ('close genetic relatives') are involved.
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