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Darwin’s Voyage Main Points Of Natural Sel Darwin’s Observations Theory of Evolution Definitions 10 Point 10 Point 10 Point 10 Point 10 Point 20 Points 20 Points 20 Points 20 Points 20 Points 30 Points 30 Points 30 Points 30 Points 30 Points 40 Points 40 Points 40 Points 40 Points 40 Points 50 Points 50 Points 50 Points 50 Points 50 Points

One of Darwin’s Conclusions was that the Finches on the Galapagos Islands were descendants of whom?

South American Ancestor/Finches

The Galapagos Islands are off the coast of what continent?

South America

Darwin observed that all the species of finches on the Galapagos had similar physical characteristics. What idea of Darwin’s does this support?

Common Ancestor

What adaptations did the Galapagos Finches have?

Different Beaks for Different Food Sources

Why evolve?

To increase fitness and survival

How many main points are there to Darwin’s Theory of Evolution by Natural Selection?

Five

This main point explains why all humans look different.

There are variations within a population.

This main point explains why populations size doesn’t double Exponentially.

More offspring are produced than can survive.

This main point explains why giraffes with short necks die out.

Some variations are better than others.

This explains why there are more and more long necked giraffes each generation and less and less short necked.

The offspring that survive have better variations.

In nature, population size tends to remain what?

Stable!

Environmental resources are what?

Limited!

Individuals of a population ______ in their characteristics with no two being exactly alike.

Vary!

Much of the variation between individuals is what?

Genetic!

Define Natural Selection.

The unequal ability of individuals to survive and reproduce leads to a gradual change in a population, with favorable characteristics accumulating over generations

What are the 3 concepts of Darwin’s Theory of Evolution by Natural Selection?

Struggle for Existence Survival of the Fittest Descent with Modification

This concept refers to competition for food, mates, space, water, etc.

Struggle for Existence

This concept refers to new species arising from a common ancestor replacing less fit species

Descent with Modification

This concept refers to individuals being better adapted to survive and reproduce.

Survival of the Fittest

Did Darwin fail to convince the majority of biologists and other educated lay people in the late 19th century that life evolves and did his book On the Origin of Species not sell well?

NOOOOOO!!

This term means : the slow , gradual change in a population of organisms over time

Evolution!

This term refers to the unequal ability of individuals to survive and reproduce leads to a gradual change in a population, with favorable characteristics accumulating over generations

Natural Selection!

This term is: an individual’s contribution of genes to the next generation

Fitness!

This term means: an inherited Characteristic That Increases an Organisms Chance for Survival

Adaptation!

This idea means that organisms change with time, diverging from a common form

Descent with Modification!

Final Jeopardy Make your wager

Describe 5 adaptations that primates have

Eyes:. This gives good binocular vision Eyes:. This gives good binocular vision. Teeth: Incisors, canines, and molars. Brain: A lot of development in the neo-cortex which implies heavier reliance on learning and memory. Skeletal layout: Fairly generalized so it can be used for many different modes of locomotion.