Evolution - Shelton School District
... Natural selection – a blend of chance and sorting Chance - mutation & sexual recombination of alleles lead to genetic variation in a population Sorting – differences in reproductive success among members of the varying population Genetic drift, gene flow, and mutation cause microevolution or ...
... Natural selection – a blend of chance and sorting Chance - mutation & sexual recombination of alleles lead to genetic variation in a population Sorting – differences in reproductive success among members of the varying population Genetic drift, gene flow, and mutation cause microevolution or ...
How do organisms sometimes change over time?
... Darwin’s Finches • The isolation of the birds on an island caused the finches to develop lots of different kinds of beaks. ...
... Darwin’s Finches • The isolation of the birds on an island caused the finches to develop lots of different kinds of beaks. ...
The slow, gradual change in a species is called ___Evolution_____
... of similar structures that have similar functions from different, un-related species. Wings of a bat, bird, or a dragonfly. All have same function and shape, but formed in obviously different organisms. ...
... of similar structures that have similar functions from different, un-related species. Wings of a bat, bird, or a dragonfly. All have same function and shape, but formed in obviously different organisms. ...
Mechanisms of Evolution Practice Write the term or phrase that best
... eating the insecticide caused the bugs to become less resistant to it it destroyed organisms that cause disease in the insects, thus allowing them to live longer the pests developed physiological adaptations to the insecticide ...
... eating the insecticide caused the bugs to become less resistant to it it destroyed organisms that cause disease in the insects, thus allowing them to live longer the pests developed physiological adaptations to the insecticide ...
File
... 1. On Darwin’s voyage, what was interesting about the tortoises on the different islands? The tortoise was native to 7 of the 19 Galapagos Islands. Shell size and shape vary between populations. On islands with low vegetation, tortoises have short necks and domed shells. On islands with tall vegetat ...
... 1. On Darwin’s voyage, what was interesting about the tortoises on the different islands? The tortoise was native to 7 of the 19 Galapagos Islands. Shell size and shape vary between populations. On islands with low vegetation, tortoises have short necks and domed shells. On islands with tall vegetat ...
File
... 5. Briefly explain how each of the above principles is necessary for natural selection to occur. In order for there to be a reason for natural selection, there have to be more individuals present than the environment can support. Because of this, there is competition between the organisms. Those wit ...
... 5. Briefly explain how each of the above principles is necessary for natural selection to occur. In order for there to be a reason for natural selection, there have to be more individuals present than the environment can support. Because of this, there is competition between the organisms. Those wit ...
Natural Selection - SBI3U
... uterus early and completes further development in a pouched [Video] • Placental mammals: The fetus is protected by a placenta and develops inside the uterus • The reason Australia has so many marsupials is because they all evolved from marsupial ancestors on an island isolated from placental mammals ...
... uterus early and completes further development in a pouched [Video] • Placental mammals: The fetus is protected by a placenta and develops inside the uterus • The reason Australia has so many marsupials is because they all evolved from marsupial ancestors on an island isolated from placental mammals ...
Evolution of Living Things
... book Principles of Geology, written by Charles Lyell, where he learned the age of Earth. • Darwin also learned from Thomas Malthus’ essay on the Principle of Population, which helped him realize that animal species often produced too many offspring, and starvation, disease, and ...
... book Principles of Geology, written by Charles Lyell, where he learned the age of Earth. • Darwin also learned from Thomas Malthus’ essay on the Principle of Population, which helped him realize that animal species often produced too many offspring, and starvation, disease, and ...
Power Point Presentation
... Homologous structures—different functions but similar structure. Theorized to be due to common ancestry ...
... Homologous structures—different functions but similar structure. Theorized to be due to common ancestry ...
Quick Reference Sheet
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
Topic 8: Evolution
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
Evolution Quick Guide
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
Topic 8 Quick Facts
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
... Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met ...
Evolution
... –look like your poison Mullerian –everyone is poison and looks like it. Look like something uneatable Startle your enemy Batesian ...
... –look like your poison Mullerian –everyone is poison and looks like it. Look like something uneatable Startle your enemy Batesian ...
Chapter 14
... Lamarck Theory of Use and Disuse Theory stated- Proposed that selective use or disuse of organs caused organisms to acquire or lose certain traits during their lifetime Then these could be passed to offspring and over time could lead to a change in species ...
... Lamarck Theory of Use and Disuse Theory stated- Proposed that selective use or disuse of organs caused organisms to acquire or lose certain traits during their lifetime Then these could be passed to offspring and over time could lead to a change in species ...
1. Who is Charles Darwin and why is he included in Chapter 14
... 2. Explain Lamarck’s theory of the “inheritance of acquired traits”. Why is this theory not true? (Please include your own example to “prove” that inheritance of acquired traits does not work) According to this theory the use and disuse of structures can produce some heritable changes. Moreover, cha ...
... 2. Explain Lamarck’s theory of the “inheritance of acquired traits”. Why is this theory not true? (Please include your own example to “prove” that inheritance of acquired traits does not work) According to this theory the use and disuse of structures can produce some heritable changes. Moreover, cha ...
Evolution and Classification Homework Evolution: Theory Due
... Read p. 283-288 1. Jean Baptiste de Lamarck proposed a unifying hypothesis of species modification during the late 1700’s. He proposed that similar species descended from a common ancestor. What did he mean by “common ancestor?” 2. Lamarck hypothesized that acquired traits were passed on to offsprin ...
... Read p. 283-288 1. Jean Baptiste de Lamarck proposed a unifying hypothesis of species modification during the late 1700’s. He proposed that similar species descended from a common ancestor. What did he mean by “common ancestor?” 2. Lamarck hypothesized that acquired traits were passed on to offsprin ...
Evolution- Beliefs about the origin of life
... structures. bats and insects share a common ancestor, since both have wings. But a closer look at the structure of the wings shows that there is very little in common between them besides their function . ...
... structures. bats and insects share a common ancestor, since both have wings. But a closer look at the structure of the wings shows that there is very little in common between them besides their function . ...
Name Period ______ Date Study Island Lesson 7
... Basic Criteria for Natural Selection 29. What does survival of a species depend on?__________________________________________________ ...
... Basic Criteria for Natural Selection 29. What does survival of a species depend on?__________________________________________________ ...
BIOLOGY
... ______ All of these statements about the structure of human chromosome #2 provide evidence for evolution EXCEPT _______________________ A. Its banding pattern matches the pattern seen on two smaller chimp chromosomes B. It has telomeres in the center, as well as at the ends C. It carries a functiona ...
... ______ All of these statements about the structure of human chromosome #2 provide evidence for evolution EXCEPT _______________________ A. Its banding pattern matches the pattern seen on two smaller chimp chromosomes B. It has telomeres in the center, as well as at the ends C. It carries a functiona ...
Unit 7: Theory of Evolution
... • are body parts of organisms that do not have a common evolutionary origin but are similar in function. • The wings of birds, bats and insects all evolved independently to similar ways of life. ...
... • are body parts of organisms that do not have a common evolutionary origin but are similar in function. • The wings of birds, bats and insects all evolved independently to similar ways of life. ...
Vestigiality
Vestigiality refers to genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species, but have been retained during the process of evolution. Assessment of the vestigiality must generally rely on comparison with homologous features in related species. The emergence of vestigiality occurs by normal evolutionary processes, typically by loss of function of a feature that is no longer subject to positive selection pressures when it loses its value in a changing environment. The feature may be selected against more urgently when its function becomes definitively harmful. Typical examples of both types occur in the loss of flying capability in island-dwelling species.