SF Ev L4 Speciation in animals
... On the way, you may see stable polymorphisms i.e. more than one morph of the same species e.g. 2spot ladybirds ...
... On the way, you may see stable polymorphisms i.e. more than one morph of the same species e.g. 2spot ladybirds ...
Glencoe Biology
... Darwin had collected on the islands was new to European scientists. Populations from the mainland changed after reaching the Galápagos. ...
... Darwin had collected on the islands was new to European scientists. Populations from the mainland changed after reaching the Galápagos. ...
The Game of Survival
... they are brightly coloured and can be seen by predators? • Research online a range of ‘successful’ (surviving) caterpillars that are brightly coloured and suggest why they have been selected for survival • Can you suggest other theories for why some animals are brightly coloured or ‘mimic’ larger an ...
... they are brightly coloured and can be seen by predators? • Research online a range of ‘successful’ (surviving) caterpillars that are brightly coloured and suggest why they have been selected for survival • Can you suggest other theories for why some animals are brightly coloured or ‘mimic’ larger an ...
15-3 Darwin Presents His Case
... Darwin’s tenets: _________________________: Organism’s produce more offspring than their environment can support. Why? _________________________: Offspring vary in their appearance and function, some of these variations are heritable. ...
... Darwin’s tenets: _________________________: Organism’s produce more offspring than their environment can support. Why? _________________________: Offspring vary in their appearance and function, some of these variations are heritable. ...
Symbiogenesis, natural selection, and the dynamic Earth
... (Fig. 2b) has been measured in the field and may be sufficiently strong enough to cause significant evolutionary change within a relatively short time period (in some case studies, less than one hundred generations, see Majerus 2009; Majerus and Mundy 2003). Moreover, Klingsolver and Pfennig (2007) ...
... (Fig. 2b) has been measured in the field and may be sufficiently strong enough to cause significant evolutionary change within a relatively short time period (in some case studies, less than one hundred generations, see Majerus 2009; Majerus and Mundy 2003). Moreover, Klingsolver and Pfennig (2007) ...
6.4_EVOLUTION_DIVERSITY OF LIFE NOTES_3_Part 2
... Publication of “On The Origin of Species” Darwin Presented Wallace’s Essay & Some Of His Work At A Scientific Conference of the Linnaean Society in July of 1858 Then He Started On his book “Origin of Species” It Took Darwin 18 Months To Complete The Book ...
... Publication of “On The Origin of Species” Darwin Presented Wallace’s Essay & Some Of His Work At A Scientific Conference of the Linnaean Society in July of 1858 Then He Started On his book “Origin of Species” It Took Darwin 18 Months To Complete The Book ...
PowerPoint file
... – cell structure is similar in all living organisms – embryology - embryos of mammals, birds, and reptiles are very similar – homologus organs - similar organs, different ...
... – cell structure is similar in all living organisms – embryology - embryos of mammals, birds, and reptiles are very similar – homologus organs - similar organs, different ...
Influences on Darwin
... 1. Jean Baptiste Lamarck (1744–1829) was an important French naturalist. He was one of the first scientists to propose that species change over time. However, Lamarck was wrong about how species change. His idea of the inheritance of acquired characteristics is incorrect. Traits an organism develops ...
... 1. Jean Baptiste Lamarck (1744–1829) was an important French naturalist. He was one of the first scientists to propose that species change over time. However, Lamarck was wrong about how species change. His idea of the inheritance of acquired characteristics is incorrect. Traits an organism develops ...
The Evidence for Evolution
... Darwin’s contemporaries found the first of these arguments more persuasive than the second. During Darwin’s lifetime, most working scientists came around to the view that evolution is a fact, but they argued about the importance of natural selection. One hundred and fifty years later, it has turned ...
... Darwin’s contemporaries found the first of these arguments more persuasive than the second. During Darwin’s lifetime, most working scientists came around to the view that evolution is a fact, but they argued about the importance of natural selection. One hundred and fifty years later, it has turned ...
The assignment is due the second day of class.
... 12. Place the following metabolic processes in an order that fits this hypothesis for the origin of life: Photosynthesis, Aerobic Respiration, Fermentation, Nucleic Acid replication (RNA or DNA), Membrane transport _____________________________________________________________________________________ ...
... 12. Place the following metabolic processes in an order that fits this hypothesis for the origin of life: Photosynthesis, Aerobic Respiration, Fermentation, Nucleic Acid replication (RNA or DNA), Membrane transport _____________________________________________________________________________________ ...
Looking for the Last Universal Common Ancestor (LUCA)
... and thereby affect its own course. Hence forces of phylogenesis are physical. It is worth to emphasize that the physical criterion of natural selection does not determine the course of evolution because evolution itself will change the surrounding conditions which in turn will require incessant re-e ...
... and thereby affect its own course. Hence forces of phylogenesis are physical. It is worth to emphasize that the physical criterion of natural selection does not determine the course of evolution because evolution itself will change the surrounding conditions which in turn will require incessant re-e ...
OCR GCSE 21st Century Science Physics Module P2
... B3.2 How has life on Earth evolved? 1. Know that life on Earth began approximately 3500 million years ago. 2. Know and understand that life on Earth (including species that are now extinct) evolved from very simple living things. 3. Know and understand that there is variation between individuals of ...
... B3.2 How has life on Earth evolved? 1. Know that life on Earth began approximately 3500 million years ago. 2. Know and understand that life on Earth (including species that are now extinct) evolved from very simple living things. 3. Know and understand that there is variation between individuals of ...
What Darwin Never Saw
... 11. When binoculars are reversed, what can they be used for? _______________ 12. Your choice: some interesting facts given about Darwin in his experiences on the Beagle, tortoises, etc: ...
... 11. When binoculars are reversed, what can they be used for? _______________ 12. Your choice: some interesting facts given about Darwin in his experiences on the Beagle, tortoises, etc: ...
Chabot College
... identify levels of biological organization ranging from cells to organisms and discuss their interdependencies; describe the general structure of cells of heterotrophic protists, fungi, and animals; identify structures of heterotrophic protists, fungi, and animals; and investigate how they obtain, m ...
... identify levels of biological organization ranging from cells to organisms and discuss their interdependencies; describe the general structure of cells of heterotrophic protists, fungi, and animals; identify structures of heterotrophic protists, fungi, and animals; and investigate how they obtain, m ...
Chapter 3
... Understanding the history of life Systematics is based on our understanding the life diversified from a single origin. Diversity is a product of descent with modification. • Taxonomy – Naming and classification of life – System of organizing the relationships between organisms ...
... Understanding the history of life Systematics is based on our understanding the life diversified from a single origin. Diversity is a product of descent with modification. • Taxonomy – Naming and classification of life – System of organizing the relationships between organisms ...
NAME
... Which one of the following scientists first suggested that populations of organisms could change over time and that changes acquired within the lifetime of the individual could be passed onto its offspring? a. b. c. d. ...
... Which one of the following scientists first suggested that populations of organisms could change over time and that changes acquired within the lifetime of the individual could be passed onto its offspring? a. b. c. d. ...
Unit 9: Evolution (Part 1)
... b. HOMOLOGOUS STRUCTURES = parts with similar patterns (but with differing functions) to show a common ancestor ...
... b. HOMOLOGOUS STRUCTURES = parts with similar patterns (but with differing functions) to show a common ancestor ...
Essential Idea: There is overwhelming evidence for the evolution of
... Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. One of his difficulties in demonstrating the theory, however, was the lack of an example of evolution over a short period of time, which could be observed as it was taking place in na ...
... Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. One of his difficulties in demonstrating the theory, however, was the lack of an example of evolution over a short period of time, which could be observed as it was taking place in na ...
Genomics for Librarians
... Information), the home of GenBank, is part of the National Library of Medicine 2. We store and organize genes like Journal articles accession number, annotation, etc. 3. A big part of bioinformatics involves keyword searches and SQL queries in relational databases ...
... Information), the home of GenBank, is part of the National Library of Medicine 2. We store and organize genes like Journal articles accession number, annotation, etc. 3. A big part of bioinformatics involves keyword searches and SQL queries in relational databases ...
Stabilizing Selection
... The most dominant males (usually largest and most aggressive) successfully defend their redds and inseminate the eggs. Smaller males that also have the kype lose out in head-to-head competition with ...
... The most dominant males (usually largest and most aggressive) successfully defend their redds and inseminate the eggs. Smaller males that also have the kype lose out in head-to-head competition with ...
To foster student understanding of this concept, instructors can
... Essential knowledge 1.A.1: Natural selection is a major mechanism of evolution. a. According to Darwin’s theory of natural selection, competition for limited resources results in differential survival. Individuals with more favorable phenotypes are more likely to survive and produce more offspring, ...
... Essential knowledge 1.A.1: Natural selection is a major mechanism of evolution. a. According to Darwin’s theory of natural selection, competition for limited resources results in differential survival. Individuals with more favorable phenotypes are more likely to survive and produce more offspring, ...
Evolution Big Idea Powerpoint
... Essential knowledge 1.A.1: Natural selection is a major mechanism of evolution. a. According to Darwin’s theory of natural selection, competition for limited resources results in differential survival. Individuals with more favorable phenotypes are more likely to survive and produce more offspring, ...
... Essential knowledge 1.A.1: Natural selection is a major mechanism of evolution. a. According to Darwin’s theory of natural selection, competition for limited resources results in differential survival. Individuals with more favorable phenotypes are more likely to survive and produce more offspring, ...
Excerpts from Born to Rebel (1996) by Frank J
... arrange publication of his essay in case of his premature death . . . It was not until 1854 that Darwin began to work on his “Big Book,” Natural Selection. The writing of this evolutionary treatise was interrupted in July 1858 when a stunned Darwin received a brief manuscript from Alfred Russell Wal ...
... arrange publication of his essay in case of his premature death . . . It was not until 1854 that Darwin began to work on his “Big Book,” Natural Selection. The writing of this evolutionary treatise was interrupted in July 1858 when a stunned Darwin received a brief manuscript from Alfred Russell Wal ...
Darwin`s Dangerous Idea
... 9. What can hummingbirds do in the mountains that their relatives don’t do? ...
... 9. What can hummingbirds do in the mountains that their relatives don’t do? ...
Introduction to evolution
Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits. Genetic changes include mutations, which are caused by damage or replication errors in an organism's DNA. As the genetic variation of a population drifts randomly over generations, natural selection gradually leads traits to become more or less common based on the relative reproductive success of organisms with those traits.The age of the Earth is about 4.54 billion years old. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old metasedimentary rocks discovered in western Greenland. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.Evolution does not attempt to explain the origin of life (covered instead by abiogenesis), but it does explain how the extremely simple early lifeforms evolved into the complex ecosystem that we see today. Based on the similarities between all present-day organisms, all life on Earth originated through common descent from a last universal ancestor from which all known species have diverged through the process of evolution. All individuals have hereditary material in the form of genes that are received from their parents, then passed on to any offspring. Among offspring there are variations of genes due to the introduction of new genes via random changes called mutations or via reshuffling of existing genes during sexual reproduction. The offspring differs from the parent in minor random ways. If those differences are helpful, the offspring is more likely to survive and reproduce. This means that more offspring in the next generation will have that helpful difference and individuals will not have equal chances of reproductive success. In this way, traits that result in organisms being better adapted to their living conditions become more common in descendant populations. These differences accumulate resulting in changes within the population. This process is responsible for the many diverse life forms in the world.The forces of evolution are most evident when populations become isolated, either through geographic distance or by other mechanisms that prevent genetic exchange. Over time, isolated populations can branch off into new species.The majority of genetic mutations neither assist, change the appearance of, nor bring harm to individuals. Through the process of genetic drift, these mutated genes are neutrally sorted among populations and survive across generations by chance alone. In contrast to genetic drift, natural selection is not a random process because it acts on traits that are necessary for survival and reproduction. Natural selection and random genetic drift are constant and dynamic parts of life and over time this has shaped the branching structure in the tree of life.The modern understanding of evolution began with the 1859 publication of Charles Darwin's On the Origin of Species. In addition, Gregor Mendel's work with plants helped to explain the hereditary patterns of genetics. Fossil discoveries in paleontology, advances in population genetics and a global network of scientific research have provided further details into the mechanisms of evolution. Scientists now have a good understanding of the origin of new species (speciation) and have observed the speciation process in the laboratory and in the wild. Evolution is the principal scientific theory that biologists use to understand life and is used in many disciplines, including medicine, psychology, conservation biology, anthropology, forensics, agriculture and other social-cultural applications.