charles darwin's theory of natural selection

7/31/2019 Charles Darwin's Theory of Natural Selection

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Charles

Group 6

Of Section 2-B


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Overview


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Lamarck and others had promot

evolutionary theories, but in ordto explain just how life changed

they depended on speculation.

Typically, they claimed that

evolution was guided by some

long-term


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trend. in the mid-1800s, Darwin

and the British biologist AlfredRussel Wallace independently

conceived of a natural, even

observable, way for life to chang

a process Darwin

called Natural Selection


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6/5/12 Alfred Russel Wallac


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6/5/12 Charles Darwin


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The genius of Darwin, the way in which

suddenly turned all of biology upside

down in 1859 with the publication ofthe Origin of Species, can

sometimes give the misleadingimpression that the theory of evolution

sprang from his forehead fully formed

without any precedent in scientifichistory.


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But as earlier chapters in this history

have shown, the raw material for Darwi

theory had been known for decades.Geologists and paleontologists had

made a compelling case thatlife had

been on Earth for a long time

that it had changed over that time, and

that many species had become extin


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At the same time,

embryologists and othernaturalists studying living

animals in the early 1800s hadiscovered, sometimes

unwittingly, much of the bestevidence for Darwin's theory.


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Definition of

NaturalSelection


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The gradual, nonrandom

process by which biological

traits become either more or

less common in a population

a function of differential

reproduction of their bearers

It is a key mechanismof evolution.


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The preservation of

a functional

advantage that

enables a species t

compete better in


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INDIVIDUALS

BETTER ADAPTED

TO THE

ENVIRONMENT ARE

ABLE TO SURVIVE &


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The naturalistic

equivalent to

domestic

breeding.


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fargreater


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different


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Human Evolution (Sir Bio STYLE)

Someone: Sir, totoo po ba na pag mas malaki ung

utak, MATALINO?

Sir Rosales: Hindi. Depende yon sa mga (blah blah

blah ~nosebleeding stuffs~)

Someone: Eh, Sir, Paano po pag malapad noo?(OKAY. Teacher to.)

Sir Rosales: Eh di mas mukha kang gorilla!

-----------SI SIR NA MISMO NAGSABI---------------


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Dark moths on light colored bark are

easy targets for hungry birds but ar

hidden on pollution darkened trees.


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:


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:
http://evolution.berkeley.edu/evolibrary/article/history_14http://www.darwins-theory-of-evolution.com/http://en.wikipedia.org/wiki/Natural_selectionhttp://www.biology-online.org/2/15_adaptive_radiation.htmhttp://anthro.palomar.edu/evolve/evolve_2.htm

charles darwin's theory of natural selection

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