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Profile Documents Logout
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review sheet
review sheet

... 9. What are three sources of genetic variation? 10. What five conditions must be met for the HardyWeinberg Law? 11. What good ideas did Lamarck have about evolution? 12. What incorrect ideas did Lamarck have about evolution? 13. What is meant by common descent? 14. What is the definition of natural ...
P. 69 Darwin`s Theory
P. 69 Darwin`s Theory

... 6. Suppose a variation makes an individual member of a species better adapted to its environment. How might that variation affect the individual's reproduction? 7. How does the environment "select" organisms? 8. How do helpful variations accumulate in a species over time? 9. Why can only traits cont ...
Evolution - Mr. Gittermann
Evolution - Mr. Gittermann

... due to heredity Some variations are better adapted to survive These organisms that are more likely to survive therefore reproduce, therefore increase frequency of better adaptations Change over long enough time results in new species ...
Natural Selection
Natural Selection

...  All populations have genetic diversity (they are not 100% identical)  If an individual is born/produced that has trait which make it more fit it then is more likely to survive and reproduce  When it reproduces there is a higher chance that the beneficial traits will be passed on to its offspring ...
Evolution
Evolution

... • Well-accepted theory of how organisms have changed over time by natural selection. • Darwin based his ideas on: • 1. observations of nature • 2. Malthus’s theory about exponential population growth • 3. his experience breeding animals ...
Darwin proposed natural selection as the mechanism of evolution
Darwin proposed natural selection as the mechanism of evolution

... • Based his theory on 2 key sets of observations – Only small % of offspring will survive each generation – Population VARIATION  differences among members of the SAME species ...
File
File

... 3. What animals did he study on this scientific voyage? Finches (seed-eating birds) (descent with modification) 4. What did Darwin learn through studying finches? All of the finches were descended from the same species, and adapted differently to occupy different niches over time 5. What conditions ...
Slide 1
Slide 1

... Directional Selection Adaptation Mutation ...
Quiz #5
Quiz #5

... (PRINT YOUR NAME) ...
Evolution - Gander biology
Evolution - Gander biology

... • The process by which a population becomes better suited to its environment which increases chances of survival – EX: Peppered moth AND giraffes with long necks ...
evolution - snavelybio
evolution - snavelybio

... EVOLUTION ...
1. Ch. 14 PPT Notes part 1
1. Ch. 14 PPT Notes part 1

... species to evolve from a common ancestor. ...
Key Vocabulary Terms
Key Vocabulary Terms

... G. The process where organisms that are most fit for their environment survive and reproduce. ...
natural selection
natural selection

... BY NATURAL SELECTION ...
Theory of Evolution Notes
Theory of Evolution Notes

... The individuals with the ______________ ______________ / __________________________ will ________________________ and have the opportunity to _______________ _____________ it’s traits to offspring. o Natural selection acts on the _________________________ (physical appearance), not the _____________ ...
Fossil Record-Homologies-Mechanisms of Evolution Notes
Fossil Record-Homologies-Mechanisms of Evolution Notes

...  The overall effect of gene flow is to counteract natural selection by creating less differences between populations.  Example:  Plant pollen being blown into a new area ...
Charles Darwin`s Theory of Evolution
Charles Darwin`s Theory of Evolution

... From these three observations it may be inferred that in such an environment there will be a struggle for survival among individuals. 4)In sexually reproducing species, generally no two individuals are identical. Variation is rampant. 5) Much of this variation is heritable. From this it may be infer ...
Science Understandings - IHMC Public Cmaps (3)
Science Understandings - IHMC Public Cmaps (3)

... Although species my look very different, the similarities become apparent when analyzing the internal structures of organisms Although species my look very different, the similarities become apparent when analyzing their common ancestry (fossil record) Diversity of species develops gradually over ma ...
Evolution
Evolution

... 6. A trait that makes an individual different from others in its species ______variation__________________. 7. A change in the DNA of an organism _______mutation – can be helpful if makes the living thing better adapted ...
Behavioral Objectives:
Behavioral Objectives:

...  Why aren’t acquired traits passed on? o Malthus and Lyell o Observations while aboard the Beagle Explain Darwin’s theory for evolution. o What is the process called? o Explain how the process works – How does it lead to populations adapting to the environment? o Be able to describe his main points ...
File - Biology with Radjewski
File - Biology with Radjewski

... caused by external or environmental factors that switch genes on and off and affect how cells read genes instead of being caused by changes in the DNA sequence ...
The diversity of living species was far greater than anyone had
The diversity of living species was far greater than anyone had

... 9. Darwin finally published his ideas in 1859 • Other naturalists were developing the same theory that Darwin did. • Even though he was afraid of the Church’s reaction to his book he wanted to get credit for his work. ...
Learning Task – Darwinian Evolution
Learning Task – Darwinian Evolution

... Period: _______________ ...
Name - adaptingtotheenviroment
Name - adaptingtotheenviroment

... A. when a species produces many more offspring than can survive B. when plants produce more food than is needed C. when individuals produce more offspring than simply replacing themselves D. when individuals in a species can't get enough food 4. Competition between individuals is usually: B A. direc ...
Natural Selection Study Guide
Natural Selection Study Guide

... a. when organisms produce more offspring than will Survive b. the process of the change in the hereditary features in a population c. Created the theory of “Natural Selection” d. Islands that Darwin visited and helped him to create his theory for evolution e. Selection that humans do to create diffe ...
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Inclusive fitness

In evolutionary biology inclusive fitness theory is a model for the evolution of social behaviors (traits), first set forward by W. D. Hamilton in 1963 and 1964. Instead of a trait's frequency increase being thought of only via its average effects on an organism's direct reproduction, Hamilton argued that its average effects on indirect reproduction, via identical copies of the trait in other individuals, also need to be taken into account. Hamilton's theory, alongside reciprocal altruism, is considered one of the two primary mechanisms for the evolution of social behaviors in natural species.From the gene's point of view, evolutionary success ultimately depends on leaving behind the maximum number of copies of itself in the population. Until 1964, it was generally believed that genes only achieved this by causing the individual to leave the maximum number of viable direct offspring. However, in 1964 W. D. Hamilton showed mathematically that, because other members of a population may share identical genes, a gene can also increase its evolutionary success by indirectly promoting the reproduction and survival of such individuals. The most obvious category of such individuals is close genetic relatives, and where these are concerned, the application of inclusive fitness theory is often more straightforwardly treated via the narrower kin selection theory.Belding's ground squirrel provides an example. The ground squirrel gives an alarm call to warn its local group of the presence of a predator. By emitting the alarm, it gives its own location away, putting itself in more danger. In the process, however, the squirrel may protect its relatives within the local group (along with the rest of the group). Therefore, if the effect of the trait influencing the alarm call typically protects the other squirrels in the immediate area, it will lead to the passing on of more of copies of the alarm call trait in the next generation than the squirrel could leave by reproducing on its own. In such a case natural selection will increase the trait that influences giving the alarm call, provided that a sufficient fraction of the shared genes include the gene(s) predisposing to the alarm call.Synalpheus regalis, a eusocial shrimp, also is an example of an organism whose social traits meet the inclusive fitness criterion. The larger defenders protect the young juveniles in the colony from outsiders. By ensuring the young's survival, the genes will continue to be passed on to future generations.Inclusive fitness is more generalized than strict kin selection, which requires that the shared genes are identical by descent. Inclusive fitness is not limited to cases where ""kin"" ('close genetic relatives') are involved.
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