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... • If hierarchies of homology reflect evolutionary history, then we should expect to find similar patterns whether we are comparing molecules or bones or any other characteristics. • In practice, the new tools of molecular biology have generally corroborated rather than contradicted evolutionary tre ...
... • If hierarchies of homology reflect evolutionary history, then we should expect to find similar patterns whether we are comparing molecules or bones or any other characteristics. • In practice, the new tools of molecular biology have generally corroborated rather than contradicted evolutionary tre ...
Unit 8 EVOLUTION - Mayo High School for Math, Science
... The objective of this indicator is to explain how genetic processes result in the continuity of life-forms over time; therefore, the primary focus of assessment should be to construct a cause-and-effect model showing how sexual and asexual reproduction allows for the continuity of life-forms through ...
... The objective of this indicator is to explain how genetic processes result in the continuity of life-forms over time; therefore, the primary focus of assessment should be to construct a cause-and-effect model showing how sexual and asexual reproduction allows for the continuity of life-forms through ...
Phylogeny and the Tree of Life
... 2. A biological classification can allow you to make predictions about the organisms being classified, but only if the system is based on evolutionary relationship. Example: Predictions about the possible medicinal properties of plants are more likely to be accurate if those predictions are based o ...
... 2. A biological classification can allow you to make predictions about the organisms being classified, but only if the system is based on evolutionary relationship. Example: Predictions about the possible medicinal properties of plants are more likely to be accurate if those predictions are based o ...
Charles Darwin and Natural Selection
... Let’s keep thinking about the frogs. When it’s time to eat, the frog sits quietly, waits for a tasty bug to come by, sends out its long, sticky tongue, and snags the bug. The longer the frog’s tongue is, the more bugs it can snag. Because frogs with longer tongues will have a better chance of surviv ...
... Let’s keep thinking about the frogs. When it’s time to eat, the frog sits quietly, waits for a tasty bug to come by, sends out its long, sticky tongue, and snags the bug. The longer the frog’s tongue is, the more bugs it can snag. Because frogs with longer tongues will have a better chance of surviv ...
Colleen Snow Lesson plans for Biology Week 12, March 26
... disruptive selection: when individuals at the upper and lower end of the curve have a higher fitness that those at either ends of the curve. genetic drift: random change in allele frequencies that occurs in small populations. founder effect: change in allele frequencies as a result of migration of a ...
... disruptive selection: when individuals at the upper and lower end of the curve have a higher fitness that those at either ends of the curve. genetic drift: random change in allele frequencies that occurs in small populations. founder effect: change in allele frequencies as a result of migration of a ...
Theory of Evolution & Natural Selection
... • Why do so many different animals have the same structures, the arm bones in a human are the same bones as a flipper in a whale? • Why do organisms have structures they no longer use, like the appendix in a human? Non functioning wings in penguins • Why are there bones and fossil evidence of creatu ...
... • Why do so many different animals have the same structures, the arm bones in a human are the same bones as a flipper in a whale? • Why do organisms have structures they no longer use, like the appendix in a human? Non functioning wings in penguins • Why are there bones and fossil evidence of creatu ...
Fossils - lynchscience
... Fossils are the preserved remains or impressions of individual organisms that lived in the past, and are often found in sedimentary rock. Fossils provide evidence that past organisms were unlike organisms alive today, that many forms have disappeared from Earth completely, and that life has evolved ...
... Fossils are the preserved remains or impressions of individual organisms that lived in the past, and are often found in sedimentary rock. Fossils provide evidence that past organisms were unlike organisms alive today, that many forms have disappeared from Earth completely, and that life has evolved ...
Chapter 15 notes I. Darwin`s Voyage and Discovery A. 1809 Charles
... a. Adaptations don’t have to be perfect, just good enough to enable organism to pass its genes down to next generation. 2. Does not occur in a fixed direction. a. No perfect way of doing anything—if environment changes then some traits that were once adaptive may no longer be useful and different tr ...
... a. Adaptations don’t have to be perfect, just good enough to enable organism to pass its genes down to next generation. 2. Does not occur in a fixed direction. a. No perfect way of doing anything—if environment changes then some traits that were once adaptive may no longer be useful and different tr ...
Exam Name___________________________________
... Read the following scenario to answer the following question(s). Birds are a widespread group of animals, with approximately 10,000 different species found throughout the world today. Because they are relatively easy to find and so visually appealing, they have been studied more thoroughly than many ...
... Read the following scenario to answer the following question(s). Birds are a widespread group of animals, with approximately 10,000 different species found throughout the world today. Because they are relatively easy to find and so visually appealing, they have been studied more thoroughly than many ...
Genetic Variation Within Population
... • Genetic variation leads to phenotypic variation. • Phenotypic variation is necessary for natural selection. • Genetic variation is stored in a population’s gene pool. – made up of all alleles in a population – allele combinations form when organisms have offspring ...
... • Genetic variation leads to phenotypic variation. • Phenotypic variation is necessary for natural selection. • Genetic variation is stored in a population’s gene pool. – made up of all alleles in a population – allele combinations form when organisms have offspring ...
22 DetailLectOut 2012
... The examples of the guppies and drug-resistant viruses highlight two important points about natural selection. 1. Natural selection is an editing mechanism, not a creative force. It can act only on existing variation in the population; it cannot create favorable traits, it selects for favorable trai ...
... The examples of the guppies and drug-resistant viruses highlight two important points about natural selection. 1. Natural selection is an editing mechanism, not a creative force. It can act only on existing variation in the population; it cannot create favorable traits, it selects for favorable trai ...
Darwin - Integrative Biology
... • geology: earth is old (hence time for evolution to produce the huge diversity of living organisms) and accumulation of slow changes over long periods leads to creation of valleys, mountains, etc. (metaphor for natural selection and creation of new species) • structural homologies that indicate clo ...
... • geology: earth is old (hence time for evolution to produce the huge diversity of living organisms) and accumulation of slow changes over long periods leads to creation of valleys, mountains, etc. (metaphor for natural selection and creation of new species) • structural homologies that indicate clo ...
Name: Period: ______ Biology Final Review Worksheet (24 pts
... c. allows allele frequencies in a population to remain the same. d. keeps the gene pool of a population undisturbed __C__ 31. Anatomical structures that may have served a function in an ancestor, but currently do not serve any function are called a. inorganic c. vestigial b. fossilized d. mutated __ ...
... c. allows allele frequencies in a population to remain the same. d. keeps the gene pool of a population undisturbed __C__ 31. Anatomical structures that may have served a function in an ancestor, but currently do not serve any function are called a. inorganic c. vestigial b. fossilized d. mutated __ ...
Topic D (Evolution)
... • Adaptive Radiation- process in which many related species evolve from one ancestor – Example: Darwin’s Finches – One finch or mating pair makes it to an island – They have no predetors and unlimited resources. – They are able to reproduce as much as possible ...
... • Adaptive Radiation- process in which many related species evolve from one ancestor – Example: Darwin’s Finches – One finch or mating pair makes it to an island – They have no predetors and unlimited resources. – They are able to reproduce as much as possible ...
dominant organisms
... 1. These organisms were probably similar to present day archaeobacteria; those that live in harsh environments like deep ocean vents or hot springs. Like present day archaeobacteria these first autotrophs were probably chemosynthetic not photosynthetic as they don’t get energy from the sun and they ...
... 1. These organisms were probably similar to present day archaeobacteria; those that live in harsh environments like deep ocean vents or hot springs. Like present day archaeobacteria these first autotrophs were probably chemosynthetic not photosynthetic as they don’t get energy from the sun and they ...
Darwin - Integrative Biology
... • geology: earth is old (hence time for evolution to produce the huge diversity of living organisms) and accumulation of slow changes over long periods leads to creation of valleys, mountains, etc. (metaphor for natural selection and creation of new species) • structural homologies that indicate clo ...
... • geology: earth is old (hence time for evolution to produce the huge diversity of living organisms) and accumulation of slow changes over long periods leads to creation of valleys, mountains, etc. (metaphor for natural selection and creation of new species) • structural homologies that indicate clo ...
Unit 09 - Lessons 1-3
... • Genetic variation leads to phenotypic variation. • Phenotypic variation is necessary for natural selection. • Genetic variation is stored in a population s gene pool. – made up of all alleles in a population – allele combinations form when organisms have offspring ...
... • Genetic variation leads to phenotypic variation. • Phenotypic variation is necessary for natural selection. • Genetic variation is stored in a population s gene pool. – made up of all alleles in a population – allele combinations form when organisms have offspring ...
On the Origin of Species by Means of Natural
... pigments in the eye (opsins) that affect color vision. The pigment of the red species is more red-shifted. ...
... pigments in the eye (opsins) that affect color vision. The pigment of the red species is more red-shifted. ...
EEB 245/Spring 2004 C. Simon First Study Guide, second
... True or false: an allele at 40% frequency in a population will increase faster than one at 10% frequency even if each allele has exactly the same selective advantage. Why are rare deleterious alleles difficult to eliminate by natural selection? Finish this sentence: deleterious dominant alleles will ...
... True or false: an allele at 40% frequency in a population will increase faster than one at 10% frequency even if each allele has exactly the same selective advantage. Why are rare deleterious alleles difficult to eliminate by natural selection? Finish this sentence: deleterious dominant alleles will ...
10.4 Evidence of Evolution
... Different ecosystems on each island—with different plants, climates, and predators—had favored different traits in these migrants. Over time, these new traits became well established in the separate island populations, since the islands were too far apart for mating to occur. One clear example of lo ...
... Different ecosystems on each island—with different plants, climates, and predators—had favored different traits in these migrants. Over time, these new traits became well established in the separate island populations, since the islands were too far apart for mating to occur. One clear example of lo ...
CHAPTER 16 PRACTICE TEST EVOLUTION
... discoveries with regard to it and explanations are always adjusted if necessary. Evolutionary theory is like all of the other sciences in this respect. Science is always trying to improve our knowledge. At present, evolution is the only well-supported natural explanation for all of life’s diversity. ...
... discoveries with regard to it and explanations are always adjusted if necessary. Evolutionary theory is like all of the other sciences in this respect. Science is always trying to improve our knowledge. At present, evolution is the only well-supported natural explanation for all of life’s diversity. ...
chapter 16 practice test evolution
... discoveries with regard to it and explanations are always adjusted if necessary. Evolutionary theory is like all of the other sciences in this respect. Science is always trying to improve our knowledge. At present, evolution is the only well-supported natural explanation for all of life’s diversity. ...
... discoveries with regard to it and explanations are always adjusted if necessary. Evolutionary theory is like all of the other sciences in this respect. Science is always trying to improve our knowledge. At present, evolution is the only well-supported natural explanation for all of life’s diversity. ...
Evolution - Wise Science
... with an organism’s function – for example: the proteins that make a spider’s web or the venom of a rattlesnake. Evidence of (Species) Evolution 1. Fossils: preserved remains or evidence of an organism that lived long ago (bones, casts, frozen in ice or amber, etc…). Incomplete records: There are “ ...
... with an organism’s function – for example: the proteins that make a spider’s web or the venom of a rattlesnake. Evidence of (Species) Evolution 1. Fossils: preserved remains or evidence of an organism that lived long ago (bones, casts, frozen in ice or amber, etc…). Incomplete records: There are “ ...
evolution test review slides - Sandora Biology
... functions, but evolved independently of each other due to similar selective forces acting on a population. • Examples? ...
... functions, but evolved independently of each other due to similar selective forces acting on a population. • Examples? ...
Evidence of common descent
Evidence of common descent of living organisms has been discovered by scientists researching in a variety of disciplines over many decades and has demonstrated common descent of all life on Earth developing from a last universal ancestor. This evidence explicates that evolution does occur, and is able to show the natural processes by which the biodiversity of life on Earth developed. Additionally, this evidence supports the modern evolutionary synthesis—the current scientific theory that explains how and why life changes over time. Evolutionary biologists document evidence of common descent by making testable predictions, testing hypotheses, and developing theories that illustrate and describe its causes.Comparison of the DNA genetic sequences of organisms has revealed that organisms that are phylogenetically close have a higher degree of DNA sequence similarity than organisms that are phylogenetically distant. Further evidence for common descent comes from genetic detritus such as pseudogenes, regions of DNA that are orthologous to a gene in a related organism, but are no longer active and appear to be undergoing a steady process of degeneration from cumulative mutations.Fossils are important for estimating when various lineages developed in geologic time. As fossilization is an uncommon occurrence, usually requiring hard body parts and death near a site where sediments are being deposited, the fossil record only provides sparse and intermittent information about the evolution of life. Scientific evidence of organisms prior to the development of hard body parts such as shells, bones and teeth is especially scarce, but exists in the form of ancient microfossils, as well as impressions of various soft-bodied organisms. The comparative study of the anatomy of groups of animals shows structural features that are fundamentally similar or homologous, demonstrating phylogenetic and ancestral relationships with other organisms, most especially when compared with fossils of ancient extinct organisms. Vestigial structures and comparisons in embryonic development are largely a contributing factor in anatomical resemblance in concordance with common descent. Since metabolic processes do not leave fossils, research into the evolution of the basic cellular processes is done largely by comparison of existing organisms' physiology and biochemistry. Many lineages diverged at different stages of development, so it is possible to determine when certain metabolic processes appeared by comparing the traits of the descendants of a common ancestor. Universal biochemical organization and molecular variance patterns in all organisms also show a direct correlation with common descent.Further evidence comes from the field of biogeography because evolution with common descent provides the best and most thorough explanation for a variety of facts concerning the geographical distribution of plants and animals across the world. This is especially obvious in the field of insular biogeography. Combined with the theory of plate tectonics common descent provides a way to combine facts about the current distribution of species with evidence from the fossil record to provide a logically consistent explanation of how the distribution of living organisms has changed over time.The development and spread of antibiotic resistant bacteria, like the spread of pesticide resistant forms of plants and insects provides evidence that evolution due to natural selection is an ongoing process in the natural world. Alongside this, are observed instances of the separation of populations of species into sets of new species (speciation). Speciation has been observed directly and indirectly in the lab and in nature. Multiple forms of such have been described and documented as examples for individual modes of speciation. Furthermore, evidence of common descent extends from direct laboratory experimentation with the selective breeding of organisms—historically and currently—and other controlled experiments involving many of the topics in the article. This article explains the different types of evidence for evolution with common descent along with many specialized examples of each.