1. EVOLUTION-
WEBQUEST
Fatoumata Camara 4ºA

2. DARWIN'S EVIDENCES
AND WHAT HE
NOTICED: he could found
1-Darwin saw more types of species that
on his own country
2-He was impresionated by the fact that casualy all the
animals and plantas were very well situated related to the
climate and the environment where they where and how
the organism survive and reproduce and make offsprings.
3-He also found fossils some were like some animals that
he had seen but many of them were from species that had
disapeard and he had never seen, he started to make
questions about why they had disappeared and how to
related them with the species that were now alive.

4. 
The part of the journey that took more the
attention of Darwin was THE GALAPAGO’S
ISLAND.
A group of islands that were in the coast
of South America that were
very close but each had a different climate
and the species that inhabitate there were
differents.(they variate)
-That make darwin thinks a lot: he started to
realise that if the animals of the defferent
islands had beeb once many years ago had
been of the same species.

6. LAMMARK'S IDEAS

The main points of Lammark theory were:
1-TENDENCY TOWARD PERFECTION:
Organism continually change and
acquire feautures that help them live more
succesfully.
Ex: Gueopards wanted to run faster to
catch their food so their legs adapat to
them in order to them to run faster.

7. 2-
2-USE AND DISUSE:
.Body parts that were used developed,
and those that were not went away.
Ex) reptiles stop using their lengs they left
them and turn into snakes.
3-EVOLUTION OF ACQUIRED TRAITS
.Organism that change a characteristic in
their lifetime ,would pass that change on
their offspring.

9. DARWIN'S THEORY

1-INHERITED
VARIATION
-Members of each new species vary from
one another in important ways.
Ex: Some plants have biggest flowers,
some cows give more milk.

10. 
2-SIURVIVAL OF
THE FITTEST:
Darwin called the hability of an
organism to reproduce and survive
fitness.
He proposed that fitness is the result of
the adpatations.
Individuals with low level of fitness die and

11. DESCENDENT WITH
MODIFICATION
Darwin proposed that each living
species has descended, with
changes from other species over
time, so each species had like
ancestors that live years ago
before they borned.

12. NATURAL SELECTION
Darwin was sure that a process of natural
selection occurs in the nature.
-High birth rates and shortage for resources
would force organisms to compite for
resouces.
- Natural selection results in changes in the
inherited characteristics of a population(of
any specie). These changes increase a
species fitness in its environment

13. SUMMARY OF DARWIN'S
THEORY
1-Species (populations of interbreeding organisms) change over time and
space. The representatives of species living today differ from those that lived
in the recent past, and populations in different geographic regions today differ
slightly in form or behavior.
2-All organisms share common ancestors with other organisms. Over time,
populations may divide into different species, which share a common
ancestral population. Far enough back in time, any pair of organisms shares a
common ancestor.
EXAMPLE: HUMANS AND CHIMPANZEES.
3-Evolutionary change is gradual and slow.It doesn't occurs suddenly they
have to pass many years.

14. 4-Natural selection with its four components:
1-Variation: Organisms (within populations) show individual
variation in appearance and behavior. On the other hand, some
traits show little to no variation among individuals(number of eyes
in the vertebrates).
2-Inheritance: Some traits are consistently passed on from parent
to offspring. Some traits are heritable,and others traits are
strongly influenced by environmental conditions and show weak
heritability.
3-High rate of population growth: Most populations have more
offspring each year than local resources can support leading to a
struggle for resources. Each generation experiences substantial
mortality.(dead)
4-Differential survival and reproduction: Individuals possessing
traits well suited for the struggle for local resources will contribute
more offspring to the next generation.

16. Voyage of the Beagle
The voyage of the beagle started on 27 December
1831, he was 22 years old.
The Galapagos island were the key he found
to propose his theory: they were close
together they all had different climates and
differences between the species.

19. On the Origin of Species
Darwin present the book presenting his theory of
evolution in 1859 with the title of:
''ON THE ORIGION OF SPECIES''

20. HOMOLOGOUS AND
ANALOGOUS ORGANS
HOMOLOGOUS
STRUCTURES: Structures
that have different forms
but develop from the
same embryonic tissue

21. HOMOLOGOUS ORGANS

22. ANALOGOUS ORGANS

23. 1-He recollected a lot of plants such us :
- P. macrocarpa,kaulf(in james island)
-Pleopeltis lepidota,Willd(Charles Island)
-Hemmionitis pinaata, hook.fil(Charles
islands)
2-he also recollected lots of specimens such
us birds in fact he recollected a number of
314 slides of specimens,and also fossils that
led him to propose that leving beingd had
made an evolution.

24. SOME FOSSILS AND
SPECIMENS THAT HE
RECOLLECT

28. A SIMILAR THEORY
In 1858 Alfred Russel Wallace wrote to
Darwin about a theory of evolution that was
similar to his, so that means that he was
thinking about a very similar theory to
Darwin's one at the same time.

30. CO-EVOLUTION:
-The term co-evolution is used to describe cases where two (or
more) species reciprocally affect each other’s evolution.
EXAMPLE: an evolutionary change in the morphology of a plant,
might affect the morphology of an herbivore that eats the plant,
which in turn might affect the evolution of the plant, which might
affect the evolution of the herbivore...and so on.

32. NEODARWINISM
Neo-Darwinism is the 'modern synthesis' of Darwinian
evolution through natural selection with Mendelian
genetics, the latter being a set of primary tenets
specifying that evolution involves the transmission of
characteristics from parent to child through the
mechanism of genetic transfer, rather than the
'blending process' of pre-Mendelian evolutionary
science. Neo-Darwinism also separates Darwin's
ideas of natural selection from his hypothesis of
Pangenesis as a Lamarckian source of variation
involving blending inheritance

33. SOURCES:
http://www.globalchange.umich.edu/globalchange1/current/lectures/selection/selection.html
http://bioweb.cs.earlham.edu/9-12/evolution/HTML/theory.html
http://darwin-online.org.uk/content/frameset?itemID=A38&viewtype=image&pageseq=18
http://evolution.berkeley.edu/evosite/evo101/IIIFCoevolution.shtml
http//www.wikipedia.com
Google images