Speciation
... • Example: male fireflies signal to females of their kind by blinking the lights on their tails in a particular pattern. Females respond only to characteristics of their own species, flashing back to attract males. If, for any reason, the female does not respond with the correct pattern, no mating o ...
... • Example: male fireflies signal to females of their kind by blinking the lights on their tails in a particular pattern. Females respond only to characteristics of their own species, flashing back to attract males. If, for any reason, the female does not respond with the correct pattern, no mating o ...
25.6 - Laurel County Schools
... of the branches do not survive. • When tracing the evolutionary history of a species consider all the evidence. • There is no drive toward a particular outcome (phenotype – physical attributes due to genes) • Does the evolutionary history of horses really show an evolutionary trend toward large size ...
... of the branches do not survive. • When tracing the evolutionary history of a species consider all the evidence. • There is no drive toward a particular outcome (phenotype – physical attributes due to genes) • Does the evolutionary history of horses really show an evolutionary trend toward large size ...
Evidence of Evolution
... Influences on Darwin’s Work • Influenced by the work of many others, Darwin worked to refine his explanation for how species change over time. • Hutton and Lyell helped scientists recognize that Earth is many millions of years old, and the processes that changed Earth in the past are the same proce ...
... Influences on Darwin’s Work • Influenced by the work of many others, Darwin worked to refine his explanation for how species change over time. • Hutton and Lyell helped scientists recognize that Earth is many millions of years old, and the processes that changed Earth in the past are the same proce ...
Evolution Unit 5 Overview
... What changes in evolution? Actually what changes is the frequency of an allele. The frequency of an allele in the gene pool of a population is how often an allele occurs in the genotypes of individuals of the same species that are in the same area - the same population. How often the allele occurs d ...
... What changes in evolution? Actually what changes is the frequency of an allele. The frequency of an allele in the gene pool of a population is how often an allele occurs in the genotypes of individuals of the same species that are in the same area - the same population. How often the allele occurs d ...
Evolution • Nature encourages no looseness, pardons no errors
... 3.4.2 Natural selection and geographic isolation are mechanisms of evolution which can lead to speciation. ...
... 3.4.2 Natural selection and geographic isolation are mechanisms of evolution which can lead to speciation. ...
I can describe the genetic variability of offspring due to mutations
... and vary the variable that you controlled. How does your population of rabbits change? What conclusions can you make and how would you further change the experiment? Essential Ideas: Similarities within the diversity of existing and fossil organisms are due to natural selection. Prior to Darwin, ...
... and vary the variable that you controlled. How does your population of rabbits change? What conclusions can you make and how would you further change the experiment? Essential Ideas: Similarities within the diversity of existing and fossil organisms are due to natural selection. Prior to Darwin, ...
Evidence of Evolution
... C. Convergent evolution occurs when two species living in the same area are competing for the same resource thus causing one to evolve away from the other. D. Convergent evolution occurs when two species living in different areas evolve similarities through natural selection acting on those characte ...
... C. Convergent evolution occurs when two species living in the same area are competing for the same resource thus causing one to evolve away from the other. D. Convergent evolution occurs when two species living in different areas evolve similarities through natural selection acting on those characte ...
Review- Evidence for Evolution
... C. Convergent evolution occurs when two species living in the same area are competing for the same resource thus causing one to evolve away from the other. D. Convergent evolution occurs when two species living in different areas evolve similarities through natural selection acting on those characte ...
... C. Convergent evolution occurs when two species living in the same area are competing for the same resource thus causing one to evolve away from the other. D. Convergent evolution occurs when two species living in different areas evolve similarities through natural selection acting on those characte ...
Evolution Review for Biology
... 64. What effect could separation of populations have on speciation? 65. At what point are two organisms considered to be separate species? 66. What are the four types of isolation? Describe and provide an example for each one. 67. Why is natural selection not random? 68. Explain the difference betwe ...
... 64. What effect could separation of populations have on speciation? 65. At what point are two organisms considered to be separate species? 66. What are the four types of isolation? Describe and provide an example for each one. 67. Why is natural selection not random? 68. Explain the difference betwe ...
Pre-Darwinian Thinking and Charles Darwin
... • Clash for first couple of decades of 20th century • Why? Darwin emphasized gradual change, but genetics indicated abrupt change possible between generations Yellow pea can produce green pea ...
... • Clash for first couple of decades of 20th century • Why? Darwin emphasized gradual change, but genetics indicated abrupt change possible between generations Yellow pea can produce green pea ...
Evolution Summary Questions
... inherited them from a common ancestor. If the first organisms used them, and they are still around, it shows common ancestry. The same is true of DNA. All organisms use it to store information, so it shows that we ALL inherited from a distant common ancestor. ...
... inherited them from a common ancestor. If the first organisms used them, and they are still around, it shows common ancestry. The same is true of DNA. All organisms use it to store information, so it shows that we ALL inherited from a distant common ancestor. ...
Humans: Evolution or creation?
... • we seem to be different from animals ( they implicitly state that humans are different from, rather than an example of an animal). • only humans have language, self awareness, morality, highlydeveloped intelligence and technology, so it is highly unlikely that we have a common ancestor with chimpa ...
... • we seem to be different from animals ( they implicitly state that humans are different from, rather than an example of an animal). • only humans have language, self awareness, morality, highlydeveloped intelligence and technology, so it is highly unlikely that we have a common ancestor with chimpa ...
Darwin - Integrative Biology
... Fig. 22.14 (7th and 6th)). • developmental homologies that indicate close phylogenetic relationships “ontogeny recapitulates phylogeny”: the developmental history of an organism passes through stages that are shared with the embryonic stages of evolutionary ancestors. Comparative embryology shows ho ...
... Fig. 22.14 (7th and 6th)). • developmental homologies that indicate close phylogenetic relationships “ontogeny recapitulates phylogeny”: the developmental history of an organism passes through stages that are shared with the embryonic stages of evolutionary ancestors. Comparative embryology shows ho ...
Unit 09 - Lessons 1-3
... – occur at roughly the same rate as speciation – usually affects a few species in a small area – caused by local changes in environment ...
... – occur at roughly the same rate as speciation – usually affects a few species in a small area – caused by local changes in environment ...
evolution - Fall River Public Schools
... The three major factors that alter allele frequencies and bring about most evolutionary change are natural selection, genetic drift, and gene flow. o Natural selection results in alleles being passed to the next generation in proportions different from their relative frequencies in the present gener ...
... The three major factors that alter allele frequencies and bring about most evolutionary change are natural selection, genetic drift, and gene flow. o Natural selection results in alleles being passed to the next generation in proportions different from their relative frequencies in the present gener ...
Darwin VS Lamarck
... • Design a butterfly that can be camouflaged in the classroom. • Cut out your butterfly and write your name on the back. • Place your butterfly on a visible surface in the classroom (you can’t hide them behind objects). Make the butterfly as invisible as possible. • Return to your seat and copy down ...
... • Design a butterfly that can be camouflaged in the classroom. • Cut out your butterfly and write your name on the back. • Place your butterfly on a visible surface in the classroom (you can’t hide them behind objects). Make the butterfly as invisible as possible. • Return to your seat and copy down ...
Evolution Test Review
... short plants, another that preferred plants of medium height and a third that visited only the tallest plants. If the pollinator that preferred plants of medium height disappeared from an area, medium height plants would be selected against and the population would tend toward both short and tall, b ...
... short plants, another that preferred plants of medium height and a third that visited only the tallest plants. If the pollinator that preferred plants of medium height disappeared from an area, medium height plants would be selected against and the population would tend toward both short and tall, b ...
You Light Up My Life - Las Positas College
... We’re All Related • All species are related by descent • Share genetic connections that extend back in time to the prototypical cell ...
... We’re All Related • All species are related by descent • Share genetic connections that extend back in time to the prototypical cell ...
Ch.22 Study Guide
... A) differential reproductive success based on inherited characteristics B) inheritance of acquired characteristics C) change in response to need D) a process of constant improvement, leading eventually to perfection ___11) Which of the following thinkers argued that much of human suffering was the r ...
... A) differential reproductive success based on inherited characteristics B) inheritance of acquired characteristics C) change in response to need D) a process of constant improvement, leading eventually to perfection ___11) Which of the following thinkers argued that much of human suffering was the r ...
Natural Selection and the Evidence of Evolution
... – What he studied: many species of animals and plants unique to the island, but are similar elsewhere – Major findings: Observations led to his consideration that species change over time ...
... – What he studied: many species of animals and plants unique to the island, but are similar elsewhere – Major findings: Observations led to his consideration that species change over time ...
Creation Science - Oldham Woods Church of Christ
... Edward L. Ericson “The core of the humanistic philosophy is naturalism-the proposition that the natural world proceeds according to its own internal dynamics, without divine or supernatural control or guidance, and that we human beings are creations of that process.” The Humanist, 910/2000, p.30 Ric ...
... Edward L. Ericson “The core of the humanistic philosophy is naturalism-the proposition that the natural world proceeds according to its own internal dynamics, without divine or supernatural control or guidance, and that we human beings are creations of that process.” The Humanist, 910/2000, p.30 Ric ...
Origin of Diversity Notes
... Doesn't necessarily reject all alternatives, BUT It is consistant with evolution. Variation within a species says something about transmutability or the ability to evolve. Embryology = the study of the development of organisms from zygote to adult. ...
... Doesn't necessarily reject all alternatives, BUT It is consistant with evolution. Variation within a species says something about transmutability or the ability to evolve. Embryology = the study of the development of organisms from zygote to adult. ...
Chapter 17
... because of a response to a similar lifestyle or habitat • Homologous traits are those that are similar because they evolved from a common ancestor • Some evolutionists support a gradualistic model of macroevolution, meaning that speciation occurs after populations become isolated, with each group co ...
... because of a response to a similar lifestyle or habitat • Homologous traits are those that are similar because they evolved from a common ancestor • Some evolutionists support a gradualistic model of macroevolution, meaning that speciation occurs after populations become isolated, with each group co ...
Darwin - Integrative Biology
... The feature, e.g., anatomical structure, may now differ in function and there may be structural differences observed, but their evolutionary relationship is apparent. Homology can be described as similarity between species that is not functionally necessary. The closeness of the relationship between ...
... The feature, e.g., anatomical structure, may now differ in function and there may be structural differences observed, but their evolutionary relationship is apparent. Homology can be described as similarity between species that is not functionally necessary. The closeness of the relationship between ...
WHAT DOES “EVOLUTION” MEAN?
... “Evolution” means change over time. The “Theory of Evolution” says: – Living things on Earth have changed over time. ...
... “Evolution” means change over time. The “Theory of Evolution” says: – Living things on Earth have changed over time. ...
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.