Charles Robert Darwin

Creator of the Theory of Evolutionby 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 EvolutionThese ideas were

that:

1)Evolution occurred

2)The primary mechanism for the evolution was called natural selection.

Ideas on Evolution3)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 SelectionThis 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 AdaptationsWhen 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 PoolAn 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 PoolAdults in the species

give discreet hereditary particles, genes, to their young. These discreet single genes are shuffled through the generations.

DNA MethylationDNA 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 MethylationDisruption to the DNA

Methylation machinery would result in disability or fatal diseases such as ICF Syndrome (Immunodeficiency centeromere instability and facial anomalies).

About MeMy 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!!!

BibliographyAuthored 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

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©2003 Princeton University