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Nothing in Biology Makes Sense except in the Light of Evolution
Nothing in Biology Makes Sense except in the Light of Evolution

... matter only once and that all organisms, no matter how diverse in other respects, conserve the basic features of the primordial life. (It is also possible that there were several, or even many, origins of life; if so, the progeny of only one of them has survived and inherited the earth.) But what if ...
Lecture Powerpoint Here
Lecture Powerpoint Here

... Evolution is technically defined as: "a gradual process in which something changes into a different and usually more complex or better form." As it is most famously used, "evolution" is the process by which an organism becomes more sophisticated over time and in response to its environment. The Theo ...
More Than An EyeWitness
More Than An EyeWitness

... DNA sequences are used to make “family trees” so that we can see how closely related different species are. Goat Deer Human Chimpanzee Duck Chicken ...
16-3 Notes - WordPress.com
16-3 Notes - WordPress.com

... of the Galapagos. Over many generations, this led to the evolution of the __________ different finch species that live on the Galapagos Islands. ...
Unit 8: Evolution Topic: Origin of Life Aim # _____: What were the
Unit 8: Evolution Topic: Origin of Life Aim # _____: What were the

... 8) What would happen to a population that did not have variation and the environment changed? ...
Forces Driving Evolution
Forces Driving Evolution

... • Published On The Origin of Species over 20 years after his voyage on the Beagle. • It was meant to explain the diversity of life, not the origin. ...
Inducing Evolution in Bean Beetles
Inducing Evolution in Bean Beetles

... change in an insect species, bean beetles (cowpea seed beetles), Callosobruchus maculatus. Bean beetles are agricultural pest insects of Africa and Asia. Females lay their eggs on the surface of beans (Family Fabaceae). Eggs are deposited (=oviposition) singly and several days after oviposition, a b ...
over time.
over time.

... Question? How did the diversity of life originate? Through the process of Evolution. ...
Evolution Notes
Evolution Notes

... •Charles Darwin traveled to Galapagos Island and noted… Finches on different islands differed (beaks) LARGE fossils of many small animals today Isolated species became different • Why does it occur? 1) More offspring reproduce than can survive ...
Evolutionary Biology 2 - Nicholls State University
Evolutionary Biology 2 - Nicholls State University

... He described what was known about fossils and the fossil record. He described what was known about the underlying morphological similarity between forms that appear very dissimilar. He described the similarity of developmental patterns among organisms that appear very dissimilar as adults. He descri ...
Prehistoric Life Guided Tour PreVisit Evolutionary Adaptations
Prehistoric Life Guided Tour PreVisit Evolutionary Adaptations

... fossil   record   that   document   the   existence,   diversity,  extinction,   and   change   of   life   forms   throughout   the   history  of   life   on   Earth   under   the   assumption   that   natural   laws  operate   today   as   in   the   past.  MS­LS4­2:   Apply   scientific   ideas   ...
Evolution and natural selection
Evolution and natural selection

... Group vs. individual selection If cheating was heritable, what would the next generation look like? • Selection operates on gene products, and is measured across populations • NS does not typically act at the group or population level, so behaviour does not evolve for the good of the species ...
Nothing in Biology Makes Sense Except in the Light of Evolution
Nothing in Biology Makes Sense Except in the Light of Evolution

... million species of animals and plants have been described and studied; the number yet to be described is probably as great. The diversity of sizes, structures, and ways of life is staggering but fascinating. Here are just a few examples. The foot-and-mouth disease virus is a sphere 8-12 m in diamet ...
Evolution
Evolution

... within a species. He observed that within a species individuals had varying characteristics, such as eye color in people. Individuals with traits useful in their environments, such as finches whose beaks can crack a specific nut, have a better chance of surviving to reproduce and pass along those tr ...
ch16_stp
ch16_stp

... 5. Which of the following is a true statement about evolution? A. Individuals cannot evolve, but populations can evolve. B. Natural selection is the only mechanism for evolution. C. Evolution always results in more complex forms of life. D. Organisms always evolve to have the best adaptations for th ...
Questions to answer
Questions to answer

... Explain the meaning of the saying “individuals are selected, populations evolve.” How is variation generated in a population? How is it maintained? Explain the relationship between the terms alleles, genes and gene pool. Explain the relationship between the terms genotype and phenotype. Explain the ...
APS Science Curriculum Unit Planner
APS Science Curriculum Unit Planner

...  Is evolution inevitable for all living things?  What does the fossil record tell us about the history of the earth?  What information can we gain from DNA analysis of fossils?  How can an adaptation be an advantage in one environment and a liability in another?  How might we evolve in the futu ...
Speciation (Student Support)
Speciation (Student Support)

... c) Many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were have been mainly destroyed by geological activity. d) We can learn from fossils how much or how little organisms have changed as life developed on Earth. e) Extinction may be cause ...
Evolution - MCarterBio
Evolution - MCarterBio

...  Darwin inferred that if humans could change species by artificial selection, then perhaps the same process could work in nature. ...
Teacher`s Guide - Discovery Education
Teacher`s Guide - Discovery Education

... the theory of evolution. The card should also carry the date of the scientist's contribution. Acknowledge that not only Darwin himself but other scientists, too, won and lost favor over time among the scientific community. The final timeline as prepared by your students may carry more than one card ...
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1 "PRINCIPLES OF PHYLOGENETICS: ECOLOGY AND

... comparative methods. Prolonged coevolution can lead to cospeciation, which will appear as phylogenetic congruence between two or more systems of lineages. Cospeciation represents another generalization of the phylogeny/ homology relationship (which could be considered the "coevolution" of organism l ...
Printable Activities
Printable Activities

... Geneticist Dobzhansky suggested that variations in organisms originate from mutations and genetic recombination. Simpson related paleontological results of fossil registry with the principles of population genetics. Mayr linked bio-geography through the definition of allopatric speciation as a mecha ...
Evolution - Insight Cruises
Evolution - Insight Cruises

... •  Today, contemporary evolution is studied in diverse contexts both basic and applied •  Applied evolutionary biology is a burgeoning discipline of direct relevance to human ...
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Homework 1, due Jan. 11

... to be turned into Dr. Feaver at the beginning of class. Late copies are not accepted. Lined paper must be used and writing must be legible. If I have trouble reading your paper, your grade on those question affected will be 0. You are highly encouraged to draft your homework assignments in Word or s ...
Reading Essentials Chapter 15
Reading Essentials Chapter 15

... are inherited. Some adaptations take millions of years to become widespread in a population. Mole rats developed large teeth and claws. This structural adaptation helps them dig holes and protect themselves. Adaptations that keep predators from approaching an organism include a rose’s thorns and a p ...
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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.
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