Evolution and Lab 4-4
... • A cumulative change in the characteristics of organisms or populations from generation to generation – Slow process – Many small changes collect to form a new species – Species - group of the same organism, organisms that can breed together ...
... • A cumulative change in the characteristics of organisms or populations from generation to generation – Slow process – Many small changes collect to form a new species – Species - group of the same organism, organisms that can breed together ...
EVOLUTION
... G. Compare relative and absolute dating methods. H. Define transitional form and index fossil. I. Explain what can be determined about extinct species from the fossil record. ...
... G. Compare relative and absolute dating methods. H. Define transitional form and index fossil. I. Explain what can be determined about extinct species from the fossil record. ...
Section 13.1
... from a common ancestor and new species branch off from earlier species. • Similarities among all cells support the hypothesis that all life evolved from a common ancestor. – All cells have a similar cell membrane. – Many cells have the same type of cellular respiration. – All cells have DNA as their ...
... from a common ancestor and new species branch off from earlier species. • Similarities among all cells support the hypothesis that all life evolved from a common ancestor. – All cells have a similar cell membrane. – Many cells have the same type of cellular respiration. – All cells have DNA as their ...
Ch 5 Evolution of Biodiversity Content
... Evolution by artificial selection Evolution by natural selection Genetic drift Bottleneck effect Founder effect Geographic isolation Niche generalist Niche specialist Mass extinction ...
... Evolution by artificial selection Evolution by natural selection Genetic drift Bottleneck effect Founder effect Geographic isolation Niche generalist Niche specialist Mass extinction ...
Exciting Evolution
... extensively to cope with the environment becomes larger and stronger while those not used deteriorate 2. Inheritance of Acquired Characteristics – modifications an organism acquires during its lifetime can be passed along to its offspring. ...
... extensively to cope with the environment becomes larger and stronger while those not used deteriorate 2. Inheritance of Acquired Characteristics – modifications an organism acquires during its lifetime can be passed along to its offspring. ...
Slajd 1 - Katedra Ekologii i Biogeografii
... Darwin Ch. 1859. The origin of species by means of natural selection, or the preservation of favored races in the struggle for life. http://www.humannature.com/darwin/origin/contents.htm The voyage of the Beagle. http://home.att.net/~p.caimi/darwin.html ...
... Darwin Ch. 1859. The origin of species by means of natural selection, or the preservation of favored races in the struggle for life. http://www.humannature.com/darwin/origin/contents.htm The voyage of the Beagle. http://home.att.net/~p.caimi/darwin.html ...
Evolution Assessment acc (32 pts.)
... ESSAYS: Pick any 5 of the following short essays. (3 pts. each) Argue why the Hardy-Weinberg principle is unlikely in the real world. Our current concept of evolution is based on the idea of “punctuated equilibrium.” How does that compare to the old idea called “gradualism.” Name two organism ...
... ESSAYS: Pick any 5 of the following short essays. (3 pts. each) Argue why the Hardy-Weinberg principle is unlikely in the real world. Our current concept of evolution is based on the idea of “punctuated equilibrium.” How does that compare to the old idea called “gradualism.” Name two organism ...
Unit 3 Evolution Jeopardy 1
... embryology and relationships in DNA all provide evidence of this ...
... embryology and relationships in DNA all provide evidence of this ...
Some Evidence of Evolution
... transcribed to protein – E.g., psi-alpha locus of hemoglobin – Resembles that alpha locus but has a mutation ...
... transcribed to protein – E.g., psi-alpha locus of hemoglobin – Resembles that alpha locus but has a mutation ...
Chapter 22 Notes: Introduction to Evolution
... Theories of geologic gradualism helped clear the path for evolutionary biologists ● In contrast to Cuvier’s catastrophism, James Hutton, a Scottish geologist, proposed that the diversity of landforms (e.g., canyons) could be explained by mechanisms currently operating. -Hutton proposed a theory of g ...
... Theories of geologic gradualism helped clear the path for evolutionary biologists ● In contrast to Cuvier’s catastrophism, James Hutton, a Scottish geologist, proposed that the diversity of landforms (e.g., canyons) could be explained by mechanisms currently operating. -Hutton proposed a theory of g ...
Charles Darwin
... Any characteristic or trait of an organism that improves its chances of surviving in its environment. The means by which evolution takes place. Organisms that are best adapted survive. Nature “selects” organisms with helpful traits. Those with harmful traits do not usually survive to reproduce. The ...
... Any characteristic or trait of an organism that improves its chances of surviving in its environment. The means by which evolution takes place. Organisms that are best adapted survive. Nature “selects” organisms with helpful traits. Those with harmful traits do not usually survive to reproduce. The ...
Natural Selection Overview
... Proposed an evolutionary explanation for change in species through time (generation to generation): º Within any species in a given environment the following will lead to change in a species: 1. Overproduction ¶ every generation more individuals are produced than can be supported by environment ...
... Proposed an evolutionary explanation for change in species through time (generation to generation): º Within any species in a given environment the following will lead to change in a species: 1. Overproduction ¶ every generation more individuals are produced than can be supported by environment ...
Key Points in Today`s Lecture
... . . . when we come to inspect the watch, we perceive. . . that its several parts are framed and put together for a purpose, e.g. that they are so formed and adjusted as to produce motion, and that motion so regulated as to point out the hour of the day; that if the different parts had been different ...
... . . . when we come to inspect the watch, we perceive. . . that its several parts are framed and put together for a purpose, e.g. that they are so formed and adjusted as to produce motion, and that motion so regulated as to point out the hour of the day; that if the different parts had been different ...
Evolution
... Selection can only edit existing alleles (new alleles do not arise ON DEMAND) Small genetic changes can result in large morphological changes ...
... Selection can only edit existing alleles (new alleles do not arise ON DEMAND) Small genetic changes can result in large morphological changes ...
5.4 Evolution – summary of mark schemes
... theory put forward by Darwin / Wallace; overproduction of offspring; more are produced that the environment can support; resources are limited; leads to struggle for survival; variation exists / (random) mutations give rise to variation; some varieties better adapted than others; best adapted surviv ...
... theory put forward by Darwin / Wallace; overproduction of offspring; more are produced that the environment can support; resources are limited; leads to struggle for survival; variation exists / (random) mutations give rise to variation; some varieties better adapted than others; best adapted surviv ...
Chapter 22 Power Point File
... • What determines a Species? • HOW? • Gradual divergence? –proceeds over time more or less steadily • Punctuated equilibrium? – discontinuous change: long periods of time and then a short burst of speciation – Extinctions: • Mass extinctions: where large numbers of taxa become extinct all at once. ...
... • What determines a Species? • HOW? • Gradual divergence? –proceeds over time more or less steadily • Punctuated equilibrium? – discontinuous change: long periods of time and then a short burst of speciation – Extinctions: • Mass extinctions: where large numbers of taxa become extinct all at once. ...
Evolution Objectives
... The Historical Context for Evolutionary Theory Explain the mechanism for evolutionary change proposed by Charles Darwin in On the Origin of Species. . Define evolution and adaptation. Explain the mechanism for evolutionary change proposed by Jean-Baptiste de Lamarck. Explain why modern biology ...
... The Historical Context for Evolutionary Theory Explain the mechanism for evolutionary change proposed by Charles Darwin in On the Origin of Species. . Define evolution and adaptation. Explain the mechanism for evolutionary change proposed by Jean-Baptiste de Lamarck. Explain why modern biology ...
Chapter 22-‐ Descendant with Modification
... Evolutionary patterns of biodiversity have been shaped both by speciation and by extinction. Evolutionary patterns can be observed across species in populations, through fossil transitions in palaeontology, and eve ...
... Evolutionary patterns of biodiversity have been shaped both by speciation and by extinction. Evolutionary patterns can be observed across species in populations, through fossil transitions in palaeontology, and eve ...
Theory of Evolution
... -Came up with a system to organize and name all of the different known types of organisms, or species ...
... -Came up with a system to organize and name all of the different known types of organisms, or species ...
Evolution Notes 2012
... Organisms may appear to be alike and be different species. For example, Western meadowlarks and Eastern meadowlarks look almost identical to one another, yet do not interbreed with each other—thus, they are separate species according to this definition. The Western meadowlark (left) and the Eastern ...
... Organisms may appear to be alike and be different species. For example, Western meadowlarks and Eastern meadowlarks look almost identical to one another, yet do not interbreed with each other—thus, they are separate species according to this definition. The Western meadowlark (left) and the Eastern ...
SPECIATION •Isolation – Divergent Evolution •Adaptive Radiation
... • Natural selection modifies populations from one generation to the next, causing them to evolve. • Sometimes evolutionary changes are so great that some organisms can no longer interbreed with the original species • When this happens it is called SPECIATION ...
... • Natural selection modifies populations from one generation to the next, causing them to evolve. • Sometimes evolutionary changes are so great that some organisms can no longer interbreed with the original species • When this happens it is called SPECIATION ...
Evolution: Chapters 15-17
... Theory: a well supported testable __________________ of ____________________that has occurred in the natural world. History of Evolution (p. 374) 1795- Hutton published a detailed theory about _________________ ____________ that shaped the Earth (p. 377) 1798- Malthus predicts the human population w ...
... Theory: a well supported testable __________________ of ____________________that has occurred in the natural world. History of Evolution (p. 374) 1795- Hutton published a detailed theory about _________________ ____________ that shaped the Earth (p. 377) 1798- Malthus predicts the human population w ...
Dar win` s J our ney and R evolution
... Thomas Malthus notes that human population increases geometrically Jean-Baptiste de Lamarck's ideas that species change over time “use and disuse” “inheritance of acquired characteristics” Charles Darwin and his voyage on the HMS Beagle, 1831-36 observations of many organisms in many places, notably ...
... Thomas Malthus notes that human population increases geometrically Jean-Baptiste de Lamarck's ideas that species change over time “use and disuse” “inheritance of acquired characteristics” Charles Darwin and his voyage on the HMS Beagle, 1831-36 observations of many organisms in many places, notably ...
Punctuated equilibrium
Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record they will become stable, showing little net evolutionary change for most of their geological history. This state is called stasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to rare and geologically rapid events of branching speciation called cladogenesis. Cladogenesis is the process by which a species splits into two distinct species, rather than one species gradually transforming into another. Punctuated equilibrium is commonly contrasted against phyletic gradualism, the belief that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis). In this view, evolution is seen as generally smooth and continuous.In 1972, paleontologists Niles Eldredge and Stephen Jay Gould published a landmark paper developing their theory and called it punctuated equilibria. Their paper built upon Ernst Mayr's model of geographic speciation, I. Michael Lerner's theories of developmental and genetic homeostasis, as well as their own empirical research. Eldredge and Gould proposed that the degree of gradualism commonly attributed to Charles Darwin is virtually nonexistent in the fossil record, and that stasis dominates the history of most fossil species.