Darwin.

Following his voyage in the early 1830’s, Darwin

began to develop his ideas on evolution.

• It was over 20 years before he published the book

on the ________________; during that time, he

worked on other projects but kept developing his

theory, and shared and discussed his ideas widely

with friends and colleagues.

• rise of species

• Origin of Species

• birth of species

• Evolution of species

The book provided evidence that evolution has

been taking place, and explained his ideas on

_______________ as the driving force for

evolution.

• Inherited selection

• Artificial selection

• Natural selection

• Varies selection

“ selective breeding”; humans

choose desired traits in other organisms

• Natural selection

• Heredity selection

• None

• Artificial selection

Theory of Natural Selection

• 1. Genetic Variation

  2. Overproduction of Offspring

  3. Struggle for Existence

  4. Survival of the Fittest

  5. Descent with Modification

• 1. Genetic Variation

  2. Overproduction of Offspring

  3. Struggle for Existence

• 1. Genetic Variation

  2. Struggle for Existence

  3. Survival of the Fittest

  4. Descent with Modification

• 1. Genetic Variation

  2. Overproduction of Offspring

  3. Struggle for Existence

  4. Survival of the Fittest

____________ is the driving force for evolution

• Genetic selection

• Bilateral selection

• Natural selection

• Darwin’s selection

The unequal ability of organisms to survive and reproduce leads to a _________ change in a population, with favorable characteristics accumulating over generations which is called ______________

• Gradual, natural selection

• Slow, natural selection

• Smooth, natural selection

• Uninterrupted, natural selection

organisms differ; some variation is heritable. This is the starting material for natural selection.

• Genetic Variation

• Overproduction of Offspring

• Struggle for existence

• Descent with modification

- organisms produce more offspring than can survive.

• Struggle for existence

• Genetic variation

• Survival of the fittest

• Overproduction of Offspring

-members of each species compete to obtain food, living space, etc.

• Struggle for existence

• Genetic variation

• Survival of the fittest

• Overproduction of Offspring

-members of each species compete to obtain food, living space, etc.

• Struggle for existence

• Genetic variation

• Survival of the fittest

• Overproduction of Offspring