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1 EVOLUTION Introduction: The Development and Alignment of the
1 EVOLUTION Introduction: The Development and Alignment of the

... Students should first be familiar with the evidence of evolution so that they will have an informed basis for judging different explanation. Before natural selection is proposed as a mechanism for evolution, students must recognize the diversity and apparent relatedness of species. To appreciate how ...
Evolution #1
Evolution #1

... Prior to Darwin Evolution was discussed and tried to be explained by French Naturalist – Jean Baptiste Lamarck. Lamarck proposed that evolution was driven by use and disuse. He believed that traits could be acquired during ones lifetime and then passed on. For example, giraffes could acquire longer ...
Evidence - Biology Junction
Evidence - Biology Junction

... Closely related species (branches) share same line of descent until their divergence from a common ancestor ...
Modern Evolution
Modern Evolution

... •Earth was very hot consisting of inorganic substances in all states: solid, liquid, and gas. And the land was still forming from cooling lava. •The atmosphere consisted of water vapor, hydrogen, methane gas, and ammonia (No Oxygen) •As the earth cooled, water vapor condensed in the atmosphere and r ...
04Ch22EvolutionEvide..
04Ch22EvolutionEvide..

... Closely related species (branches) share same line of descent until their divergence from a common ancestor ...
Document
Document

...  Captain: Charles Darwin ...
Natural selection
Natural selection

... • Ideas About Breeding The process in which humans select which plants or animals to reproduce based on certain desired traits is called selective breeding. • Ideas About Population Only a limited number of individuals survive to reproduce. Thus, there is something special about the offspring of the ...
Ch15 Slides - Mrs. Brenner`s Biology
Ch15 Slides - Mrs. Brenner`s Biology

... • Founded the science of paleontology • Proposed catastrophism – Local catastrophes in the past had caused the Earth’s strata to have a new mix of fossils – After each catastrophe, the region was repopulated by species from surrounding areas – The result of the catastrophes was change appearing over ...
File - fiserscience.com
File - fiserscience.com

... • Founded the science of paleontology • Proposed catastrophism – Local catastrophes in the past had caused the Earth’s strata to have a new mix of fossils – After each catastrophe, the region was repopulated by species from surrounding areas – The result of the catastrophes was change appearing over ...
BioH_Population Genetics
BioH_Population Genetics

... II. Pathways to Speciation ● Natural selection can establish new species under two distinct circumstances: a) Allopatry: promotes reproductive isolation (one of the conditions for speciation) via geographic barriers that prevent gene flow (mating) between populations. b) Sympatry: promotes reproduct ...
a saltationist approach for the evolution of human
a saltationist approach for the evolution of human

... carefully perforated shells, which again had been imported from long distances. Their use as personal ornaments is confirmed by unambiguous indications of elaborate ceremonial burials associated with a range of perforated seashells (Mellars, 2005). We cannot say whether or not these first humans had ...
Chapter 20: Coevolution and Mutualism - Eco
Chapter 20: Coevolution and Mutualism - Eco

... competitive ability will be stronger in the rarer of two competitors  as shown by experiments conducted by Ayala and Pimental, this process can result in a sudden reversal in competitive superiority ...
Lesson 22 - Leavell Science Home
Lesson 22 - Leavell Science Home

... sharks and dolphins have similar-looking structures when one is a fish and one is a mammal? The theory of evolution attempts to answer such questions and more. The theory of evolution states that organisms go through a process of change over time and develop new species from preexisting ones. Phylog ...
Evolution - Fort Bend ISD
Evolution - Fort Bend ISD

... Evolutionary Terms to Know, cont’d  Competition – occurs when organisms of the same or ...
Chp 22 Descent with Modification and Darwin
Chp 22 Descent with Modification and Darwin

... Galapagos, recently formed volcanic islands which lie on the equator about 900 km west of South America. ï Most animal species on the Galapagos are unique to those islands, but resemble species living on the South American mainland. ï Darwin collected 13 types of finches from the Galapagos, and alth ...
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File

... of Evolution: “Do you really believe that humans came from monkeys?”, or “Do you really believe that something can come from nothing? Another example is “Humans are too complex to have evolved.” I have also heard countless times the term “survival of the fittest” when explaining evolution or the sta ...
Ornithology and the genesis of the Synthetic Theory of Evolution
Ornithology and the genesis of the Synthetic Theory of Evolution

... achieved on a Darwinian basis.Together with selection, which was regarded as the only causal factor leading to adaptation, further evolutionary factors were integrated (mutation, recombination, drift, geographic isolation). This Synthetic Theory of Evolution or Synthetic Darwinism has dominated evol ...
1. What is evolution? - Elizabethtown Area School District
1. What is evolution? - Elizabethtown Area School District

... evolution is a foundational scientific truth, one that has stood up to rigorous scrutiny and upon which much of human knowledge and achievement rests. To reject this truth or to treat it as “one theory among others” is to deliberately embrace scientific ignorance and transmit such ignorance to our c ...
163KB - NZQA
163KB - NZQA

... 35 mya populations of NZ skink became isolated when much of NZ’s land-mass became covered in water and underwent allopatric speciation. Those that were able to adapt filled the remaining available land niches. Approx 23 mya tectonic activity / uplift led to more land exposure and the northern skink ...
13 Bio Evolution mark schedule 2013
13 Bio Evolution mark schedule 2013

... 35 mya populations of NZ skink became isolated when much of NZ’s land-mass became covered in water and underwent allopatric speciation. Those that were able to adapt filled the remaining available land niches. Approx 23 mya tectonic activity / uplift led to more land exposure and the northern skink ...
92KB - NZQA
92KB - NZQA

... 35 mya populations of NZ skink became isolated when much of NZ’s land-mass became covered in water and underwent allopatric speciation. Those that were able to adapt filled the remaining available land niches. Approx 23 mya tectonic activity / uplift led to more land exposure and the northern skink ...
08 - SCERT
08 - SCERT

... origin of life. The strongest one among them is that life originated near volcanoes in the oceans. The concept which states that life particles originated elsewhere in the universe and reached the earth, also exists nowadays. This view is known as the Panspermia concept. ...
EVOLUTION: Unifying Concept in Biology
EVOLUTION: Unifying Concept in Biology

... same across generations, a population is evolving if it goes out of Hardy-Weinberg Equilibrium (more on this later) ...
responses to some common, misguided criticisms of biological
responses to some common, misguided criticisms of biological

... As we found above, plenty of valid tests have provided scientific evidence for microevolution. Scientists have applied selective pressures to organisms (like fruit flies) in a laboratory setting and observed dramatic changes in the genetic constitution and phenotype of the population, resulting in d ...
Evolution 2 Star - le 2014-15
Evolution 2 Star - le 2014-15

... to duplicate the history of the cove in the laboratory. They took a large number of one species of simple animal from a cove with unpolluted mud and placed them in a ask that contained polluted mud from Foundry Cove (diagram 1). Most of the animals died, but a few survived (diagram 2). The scientist ...
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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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