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Natural selection
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Slide 10

Artificial Selection

Artificial Selection

The selective breeding of domesticated plants and animals by man.

Question:

Whats the ancestor of the domesticated dog?

Answer: WOLF

Slide 11

Evidence of Evolution

Evidence of Evolution

1. Biogeography:

Geographical distribution of species.

2. Fossil Record:

Fossils and the order in which they appear in layers of sedimentary rock (strongest evidence).

Slide 12

Eastern Long Necked Turtle

Eastern Long Necked Turtle

Slide 13

Evidence of Evolution

Evidence of Evolution

3. Taxonomy:

Classification of life forms.

4. Homologous structures:

Structures that are similar because of common ancestry (comparative anatomy)

Slide 14

Evidence of Evolution

Evidence of Evolution

5. Comparative embryology:

Study of structures that appear during embryonic development.

6. Molecular biology:

DNA and proteins (amino acids)

Slide 15

Population Genetics

Population Genetics

The science of genetic change in population.

Remember: Hardy-Weinberg equation.

Slide 16

Population

Population

A localized group of individuals belonging to the same species.

Slide 17

Species

Species

A group of populations whose individuals have the potential to interbreed and produce viable offspring.

Slide 18

Gene Pool

Gene Pool

The total collection of genes in a population at any one time.

Slide 19

Hardy-Weinberg Principle

Hardy-Weinberg Principle

The concept that the shuffling of genes that occur during sexual reproduction, by itself, cannot change the overall genetic makeup of a population.

Slide 20

Hardy-Weinberg Principle

Hardy-Weinberg Principle

This principle will be maintained in nature only if all five of the following conditions are met:

1. Very large population

2. Isolation from other populations

3. No net mutations

4. Random mating

5. No natural selection

Slide 21

Hardy-Weinberg Principle

Hardy-Weinberg Principle

Remember:

If these conditions are met, the population is at equilibrium.

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