Biology 311D Concept Map - RAA2446

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Evolution: Natural Selection

af Karissa Nicholson

WHO AM I - JOANNE NGUYEN

af Nguyen Joanne

Mars

af Tina Webb

United Kingdom

af Paulo Botelho

Biotic Potential

Always dependent on phenotype

Factors that control population growth

Genetic Drift

Growth Curves

Insufficient biological resources

Logistic Growth (S-Curve)

Emigration

Mutation

Random change in gene frequency from one generation to another

Primates Evolved (60M Years Ago)

Selection

Homo Neanderthal

Resided in Europe

Exponential Growth (R-Curve)

Test 1

1. Food 2. Better medicine 3. Better sanitation

Human Evolution

1. Habitat destruction 2. Hunting 3. Species introduction 4. Disease 5. Hydridzation

Factors: Hiertability and Selection Differential

1. Stabilizing 2. Directional 3. Disruptive

Homo Habilus (2M-1.8 M Years Ago)

Ardiditicus (5 M Years Ago)

Population Regulation

Homo Sapien (350,000 Years Ago)

Enviromental Resistance

Founder effect and bottle neck effect

Test 2

"Road of Homosabiens"

1. Insufficient Food, Water, & Nutrients 2. Disease 3. Predation 4. Competition 5. Insufficient living space 6. Adverse weather conditions

Extinction

Density Dependent mortality

Hardy-Wemberg Equilibrium

3 modes of Natural Selection

Test 3

Homo Erectus (1M Years Ago)

Random change in genetic code

Died out 35,000 Years Ago

Evolution

5 major extiction

Each locus has a different mutation rate

Change in gene frequency from one generation to another

1. Rate of Reproduction 2. Resistance to Adverse Conditions 3. Defense Mechanisms

Cretaceus (65 M Years Ago): Nearly all dinasaurs went extinct

95% Harmful 4% Neutral 1% Beneficial

Population Growth

Biology 311D Concept Map - RAA2446

Mutation and Genetic Drift