Chapter 22 Concept Map 3/4

Mechanisms Behind Evolution

Mechanism 1:

Mechanism 2:

Inheritance of Acquired Traits

Natural Selection

Why it was wrong/major flaw:

Use & disuse and inheritance of acquired traits

Lamarck

Developed By:

Based On:

Giraffes developed longer necks over time to reach taller trees

No knowledge of inheritance

Mendel and Genetics came later

Because:

Main Example:

Based on observation of:

Interaction of environment and heritable traits leads to adaptations & speciation

4 Components:

Key Points:

States That:

A.R. Wallace

Inherited traits influence survival and reproductive success

All species capable of excess reproduction

Heritable variation within populations

Unequal survival and reproductive success leads to accumulation of favorable traits over generations

Charles Darwin

Developed By:

The Voyage of the Beagle

Origin of Species

Through observations during:

Wrote:

Had the idea in a malaria induced state after being stung by a mosquito in Indonesia

Submitted the idea prior to:

Struggle for existence

Important because:

Not all offspring survive

Because:

Works on:

Does not progress to "better" forms

Populations

Individuals

Random Genetic Mutations

Variability

Goal or need driven

Occurs in:

NOT in:

Environmental conditions are constantly changing

Because:

Genetics

Due to:

NOT: