Transcript Darwin_KenyaP

Charles
Robert
Darwin
Creator of the Theory of Evolution
by Kenya Pierre
May 2005
The Theory of Evolution
Charles Robert
Darwin is
famous for his
theory of
evolution.
Darwin had
several related
ideas.
Ideas of Evolution
These ideas were
that:
1)Evolution
occurred
2)The primary
mechanism for
the evolution
was called
natural selection.
Ideas on Evolution
3)The
evolutionary
change was
gradual
4)The species
present today
originated from
a single original
life
Speciation
Speciation
means that all
life used the
branching
process from an
original life.
Speciation
This means that
no two
members of
the same
species are
exactly alike.
Speciation
Each one has
an individual
combination
of traits.
Natural Selection
Natural
selection is
like the
survival of the
fittest or
domestic
breeding.
Natural Selection
This trait could
end up giving
it an
advantage to
the
environment.
Natural Selection
The organism
with this trait
could survive
longer and
produce more
offspring.
Natural Selection
Gradual
changes in
the species
will occur as
more
members
obtain this
helpful trait.
Natural Selection
These changes
may cause the
animal to have
markings that
make them
stand out and
become easy
targets.
Natural Selection
This gives them a
less chance to
survive and
reproduce. An
example of this
change is an
animal
possessing the
albino gene.
Mutations
Genetic mutations
are in the
organism’s
genetic code.
These mutations
can accumulate
making a new
organism.
Mutations
When this
happens the
disadvantaged
members of
the species
will die out.
Mutations and Adaptations
When the
evolutionary
process
happens there
are some
adaptations
that will
happen.
Mutations and Adaptations
Adaptations
can occur
when two
species
evolve
together.
Mutations and Adaptations
However
interactions
between
species is not
always
beneficial.
Mutations and Adaptations
These
interbreeding
offspring is
sterile,
meaning they
cannot
reproduce.
Mutations and Adaptations
Natural variation
may also occur
in a species.
This is when
the normal is
changed and an
example of this
is color or size.
Mutations and Adaptations
For food, the
giraffe stretched
for leaves, and
its neck grows.
The result is
that the giraffes
can reach high
leaves.
Mutations and Adaptations
Mutations are
rare and occur
when a mistake
is made
copying the
cells or genes.
Mutations and Adaptations
Mutations can
create two
different types of
traits. The neutral
traits which
neither improve
or harm an
organism's
fitness.
Mutations and Adaptations
Then there are
some traits that
reduce and
organism’s
ability to survive,
perhaps causing
it to have the
advantage.
Gene Pool
An irreducibly
complex system
is a system
composed with
multiple parts.
Each part is
necessary for
the system’s
function.
Gene Pool
If one part is
missing then
the system will
fail to function.
These
individual parts
are integral.
Gene Pool
Adults in the
species give
discreet
hereditary
particles, genes,
to their young.
These discreet
single genes are
shuffled through
the generations.
DNA Methylation
DNA Methylation is
a type of
chemical
modification
which involves
the addition of a
methyl group to
the carbon-5 of
the cytosine
pyridine ring.
DNA Methylation
DNA Methylation
is universal in
vertebrates.
DNA Methylation
is an important
chemical
process of many
living organisms.
DNA Methylation
Disruption to the
DNA Methylation
machinery would
result in disability
or fatal diseases
such as ICF
Syndrome
(Immunodeficiency
centeromere
instability and
facial anomalies).
About Me
My name is Kenya Pierre. I love to
read manga. The last one I
read was Kodocha volume 7. I
like to play video games.
However, I don’t have the
system at my house so I have
to play at my friends house. My
favorite video game is Kingdom
Hearts. I have a dog. She is a
border collie and her name is
Sandy. My favorite animal is a
dog. They are sooo cute!!!
Bibliography
Authored by Richard Dawkins, first appeared in the British Edition
of Microsoft Encarta Encyclopedia 98
reproduced with Microsoft Corporation
(C) Copyright 1998 Microsoft Corporation
copyright © 1995-2002 Leadership U
Telling the Truth Project
Updated: 14 December 2002
by Dr, Ray Bohlin
WordNet
®2.0
©2003 Princeton University