DocuWatch on Facebook
Art America Britain History Science Societies War Shop
DocuWatch

Evolution 04 - The Evolutionary Arms Race

« Evolution 03 - Extinction

Evolution 05 - Why Sex »

Description

From Wikipedia

Evolution

Episode Four

The Evolutionary Arms Race

Survival of the fittest: Raw competition? Intense cooperation? Both are essential. Interactions between and within species are among the most powerful evolutionary forces on Earth, and understanding them may be a key to our own survival.

In evolutionary biology, an evolutionary arms race is an evolutionary struggle between competing sets of co-evolving genes that develop adaptations and counter-adaptations against each other, resembling an arms race, which are also examples of positive feedback. The co-evolving gene sets may be in different species, as in an evolutionary arms race between a predator species and its prey (Vermeij, 1987), or a parasite and its host. Alternatively, the arms race may be between members of the same species, as in the manipulation/sales resistance model of communication (Dawkins & Krebs, 1979) or as in runaway evolution or Red Queen effects. One example of an evolutionary arms race is in sexual conflict between the sexes. Thierry Lodé emphasized the role of such antagonist interactions in evolution leading to character displacements and antagonist coevolution. The Escalation hypothesis put forward by Geerat Vermeij speaks of more general conflicts and was originally based on his work with marine gastropod fossils.

Co-evolution itself is not necessarily an arms race. For example, mutualism may drive co-operative adaptations in a pair of species. This is the case with certain flowers' ultra-violet color patterns, whose function is to guide bees to the center of the flower and promote pollination. Co-evolution is also interspecific by definition; it excludes intraspecific (within species) arms races such as sexual conflict.

Evolutionary arms races can even be displayed between humans and micro-organisms, where medical researchers make antibiotics, and micro-organisms evolve into new strains which are more resistant.

Tags

Other videos in channel "Evolution":

Ape Genius Ape Genius Ape To Man Ape To Man Ape-man Ape-man
Are We Still Evolving? Are We Still Evolving? Battle for Earth Battle for Earth
Coelacanth: The Fish That Time Forgot (2001) Coelacanth: The Fish That Time Forgot (2001) Cryonics: Death In The Deep Freeze Cryonics: Death In The Deep Freeze Darwin's Dangerous Idea Darwin's Dangerous Idea
Darwin's Legacy Darwin's Legacy Darwin's Struggle - The Evolution Of The Origin Of Species Darwin's Struggle - The Evolution Of The Origin Of Species
Diagnosing Darwin (2003) Diagnosing Darwin (2003) Did Cooking Make Us Human (2010) Did Cooking Make Us Human (2010) Did Darwin Get It Wrong - 1981 Did Darwin Get It Wrong - 1981
Did Darwin Kill God ? Did Darwin Kill God ? Do You Want To Live Forever ? Do You Want To Live Forever ? Don't Grow Old (2010) Don't Grow Old (2010)
Evolution 01 - Darwin's Dangerous Idea - Part One/Two Evolution 01 - Darwin's Dangerous Idea - Part One/Two Evolution 01 - Darwin's Dangerous Idea - Part Two/Two Evolution 01 - Darwin's Dangerous Idea - Part Two/Two Evolution 02 - Great Transformations Evolution 02 - Great Transformations
Evolution 03 - Extinction Evolution 03 - Extinction Evolution 04 - The Evolutionary Arms Race Evolution 04 - The Evolutionary Arms Race Evolution 05 - Why Sex Evolution 05 - Why Sex
Evolution 06 - The Mind's Big Bang Evolution 06 - The Mind's Big Bang Evolution 07 - What About God Evolution 07 - What About God First Apocalypse First Apocalypse
First Flower First Flower Game Over, Kasparov And The Machine Game Over, Kasparov And The Machine Greatest Discoveries - Origins And Evolution Greatest Discoveries - Origins And Evolution
Growing Up In The Universe Growing Up In The Universe How Did Life Begin How Did Life Begin How To Live To 101 How To Live To 101
Human v2.0 (2006) Human v2.0 (2006) Life is Impossible (1993) Life is Impossible (1993) Living Forever - Life and Death in the 21st Century - (2000) Living Forever - Life and Death in the 21st Century - (2000)
Lost Tribe of Palau - (2004) Lost Tribe of Palau - (2004) Miracle of Life - (1982) Miracle of Life - (1982) Neanderthal (2005) Neanderthal (2005)
Nice Guys Finish First (1986) Nice Guys Finish First (1986) Origins Of Us Origins Of Us Out Of Asia (1997) Out Of Asia (1997)
Search For The First Human Search For The First Human Skull Wars Skull Wars Sleeping Monsters Sleeping Monsters
T. Rex - Warrior Or Wimp (2004) T. Rex - Warrior Or Wimp (2004) The Ape That Took Over The World (2001) The Ape That Took Over The World (2001) The Blind Watchmaker (1987) The Blind Watchmaker (1987)
The Day We Learned To Think (2003) The Day We Learned To Think (2003) The Dinosaur That Fooled The World (2002) The Dinosaur That Fooled The World (2002) The Genius of Charles Darwin The Genius of Charles Darwin
The Missing Link (2001) The Missing Link (2001) The Mystery Of The Human Hobbit (2005) The Mystery Of The Human Hobbit (2005) The Mystery Of The Jurassic (2003) The Mystery Of The Jurassic (2003)
The Nine Months That Made You The Nine Months That Made You The Origin Of Life - John Maynard Smith The Origin Of Life - John Maynard Smith Volcanic Winter Volcanic Winter
Walking With Cavemen Walking With Cavemen What Makes Us Human What Makes Us Human What Really Killed The Dinosaurs (2004) What Really Killed The Dinosaurs (2004)
Wings Of Angels - (1999) Wings Of Angels - (1999)    
Video channels
Videos in this channel
Adsense
Featured
Featured
Featured
Featured
Featured
Featured