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APES 9 Week Review Sheet
APES 9 Week Review Sheet

... Species: organisms that can breed together are described by their trophic level, symbiotic relationships, predator/ prey, competition Coevolution: species evolve together (symbiosis, mutualism, parasitism, commensalism) Parasitism: take resources from another while keeping it alive Symbiosis: close ...
Ch 8-2 Notes
Ch 8-2 Notes

... categorized at the level where one population interacts with another. ...
Chapter 15: Evolution
Chapter 15: Evolution

...  __________ __________ operates to eliminate extreme expressions of a trait when the average expression leads to higher fitness.  __________ __________ makes an organism more fit.  __________ __________ is a process that splits a population into two groups.  __________ __________ operates in pop ...
Symbiosis Powerpoint File
Symbiosis Powerpoint File

... relationship between a tick and a dog? Why?  How would you describe a relationship between a human and a dog? Why? ...
Brain Squeeze
Brain Squeeze

... divergent evolution O Is when one species gives rise to many different species. O Occurs in a relatively short time span. O Usually occurs in response to the creation of a new habitat. ...
Ecology powerpoint continued how_organisms_interact
Ecology powerpoint continued how_organisms_interact

... Means of defense for plants Ex. Mustard plants (produce mustard oil, toxic to many insects), Poison ivy, Tobacco ...
SYMBIOSIS – two or more species live together in a close, long
SYMBIOSIS – two or more species live together in a close, long

... SYMBIOSIS – two or more species live together in a close, long-term association ...
“brains” of the cell, the nucleus directs cell activities and contains
“brains” of the cell, the nucleus directs cell activities and contains

... The trace remains of an organism that lived long ago and may be used as evidence to support the theory of evolution ...
Community Ecology - Tuscaloosa County High School
Community Ecology - Tuscaloosa County High School

... Have a wide range of interactions Are rarely isolated ...
Ecology
Ecology

... Def. “all the populations of organisms inhabiting a common environment and interacting with one another” ...
Community and Symbiosis
Community and Symbiosis

... Commensalism is an interaction in which one species benefits, and the other species is not affected. (from english “sharing of food” or from latin “sharing a table”) Originally, the term was used to describe the use of waste food by second animals (scavengers), like the carcass eaters that follow hu ...
Predation, Mutualism, Commensalism, or Parasitism
Predation, Mutualism, Commensalism, or Parasitism

... Commensalism is a relationship between two living organisms where one benefits and the other is neither harmed nor helped. ...
WHAT IS A NICHE?
WHAT IS A NICHE?

... All electronic storage, reproduction, or transmittal is copyright protected by the publisher. ...
Interactions - ScienceGeek.net
Interactions - ScienceGeek.net

... • When two species are competing for the same resources, one species will be better suited to the niche, and the other species will be pushed into another niche or become extinct • Invasive species may outcompete organisms that are native to a particular region ...
Concepts in the study of Evolution
Concepts in the study of Evolution

... bat and wing of a insect are analogous structures because while the underlying structures are fundamentally different, the function in both cases is flight. Coevolution - When species evolve in response to one another, they co-evolve. This is evident in the coevolution of specific pollinators for sp ...
mutualism - SMIC Biology
mutualism - SMIC Biology

... converts dead trees into organic matter.  Defensive Mutualism: One species gets food/shelter when protecting other species from harmful things such as parasites. Example: ants protect acacia trees from parasites, & get shelter from the trees instead.  Dispersive Mutualism: One species gets food ex ...
Ecology Part 2
Ecology Part 2

... • When 2 or more organisms of the same or different species attempt to use the same ...
Week 12
Week 12

... Week 12. Coevolution Study guide ...
Species Relationships
Species Relationships

... • When the # of prey increases the # of predators will increase too because there is more food to support them. The changing population size of the prey species controls the population size of the predator species – Creates a cycle • The larger the animal the larger the life cycle vs smaller animals ...
Unit 3 Vocab.
Unit 3 Vocab.

... Passenger pigeons, blue pike (a fish), many plants and insects _____________________________ ...
Ch18 - GEOCITIES.ws
Ch18 - GEOCITIES.ws

... apt to be eaten by a host in which the adult parasite can develop (ex: tapeworm larvae nerv system of sheep, sheep likely to be eaten by wolves, wolves new home for worm) *Virulence—worst outbreaks of diseases occur when parasites first encountr new host pop., selects for hosts with defense mech aga ...
Patterns of Evolution
Patterns of Evolution

... Ex: Darwin’s finches: more than a dozen species evolved from a single species. ...
ORGANISMS CAN INTERACT IN DIFFERENT WAYS
ORGANISMS CAN INTERACT IN DIFFERENT WAYS

... other is harmed. • MUTUALISM= interaction between 2 species that benefits both. (bee gets nectar from flower, & flower gets pollinated). – Many plants rely on mutualism to reproduce (insects & birds get nectar & in turn pollinate, or animals eat fruit & disperse seeds). – Mutualism might be necessar ...
Relationships in nature Study guide Matching: _____1. A close, long
Relationships in nature Study guide Matching: _____1. A close, long

... 9) Crabs and Shrimps often form relationships with anemones in tropical waters, again for the purposes of protection from predation. For instance the Anemone crab, Neopetrolisthes oshimai, which is a filter feeding Porcelain crab, lives and captures its food from within the tentacles of giant ...
parasite
parasite

... where it lives; its address  An organism’s niche = ...
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Coevolution



In biology, coevolution is ""the change of a biological object triggered by the change of a related object"". In other words, when changes in at least two species' genetic compositions reciprocally affect each other’s evolution, coevolution has occurred.There is evidence for coevolution at the level of populations and species. Charles Darwin briefly described the concept of coevolution in On the Origin of Species (1859) and developed it in detail in Fertilisation of Orchids (1862). It is likely that viruses and their hosts coevolve in various scenarios.However, there is little evidence of coevolution driving large-scale changes in Earth's history, since abiotic factors such as mass extinction and expansion into ecospaces seem to guide the shifts in the abundance of major groups. One proposed specific example was the evolution of high-crowned teeth in grazers when grasslands spread through North America - long held up as an example of coevolution. We now know that these events happened independently.Coevolution can occur at many biological levels: it can be as microscopic as correlated mutations between amino acids in a protein or as macroscopic as covarying traits between different species in an environment. Each party in a coevolutionary relationship exerts selective pressures on the other, thereby affecting each other's evolution. Coevolution of different species includes the evolution of a host species and its parasites (host–parasite coevolution), and examples of mutualism evolving through time. Evolution in response to abiotic factors, such as climate change, is not biological coevolution (since climate is not alive and does not undergo biological evolution).The general conclusion is that coevolution may be responsible for much of the genetic diversity seen in normal populations including: blood-plasma polymorphism, protein polymorphism, histocompatibility systems, etc.The parasite/host relationship probably drove the prevalence of sexual reproduction over the more efficient asexual reproduction. It seems that when a parasite infects a host, sexual reproduction affords a better chance of developing resistance (through variation in the next generation), giving sexual reproduction viability for fitness not seen in the asexual reproduction, which produces another generation of the organism susceptible to infection by the same parasite.Coevolution is primarily a biological concept, but researchers have applied it by analogy to fields such as computer science, sociology / international political economy and astronomy.
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