Evolution Plickers Quiz 1/18

What did Jean-Baptiste Lamarck propose?

-changes are adaptations to the environment -tendency toward perfection -changes are passed to offspring -law of use and disuse

How long did Aristotle's ideas last?

2000 years

How long ago did the oldest fossil organism live

3.8 billion years ago

Comparative biochem

All living things contain similar DNA, RNA, and proteins. By comparing DNA sequences of two organisms, scientists can determine whether or not the organisms are closely related. The relationship can be used to construct evolutionary pathways

The oldest fossils

Bacteria

Homologous structures

Body parts that have different nature forms but develop from the same embryonic tissues-evidence of descent from a common ancestor

Who was Charles Darwin?

British naturalist who traveled around the world on the HMS Beagle

Evolution

Change over time

Gradualism

Changes occurring slowly and in small steps. New species after millions of years

comparitive biochemistry

DNA and proteins that show similar structures are also evidence of common ancestry

4

Each organism has different advantages and disadvantages in the struggle for existence

Similarities in embryology

Early stages of embryonic development show similarities that suggest common ancestry. Studies indicate evolution from a common ancestor

What did Hutton contribute to Darwin's theory

Gradualism

Species

Group of organisms that look alike and can reproduce

Analogous structures

Have body parts that are similar In function but different in structure. These indicate that the organisms have different yet related ancestors

Fossils found that...

Many simple life forms exist early in history

What book did Darwin write?

On the Origin of Species

3.

Organisms compete for limited resources

2.

Organisms produce mor offspring than can survive

What was 1.

Organisms very and variety is inherited

Punctuated equilibrium

Rapid change after long periods of no change. New species after thousands of years

Fossil

Remains or traces, some of which no longer exist

Aristotle's beliefs on evolution

Species are fixed creations arranged by complexity

5

Species came from ancient ones

What did Thomas Malthus contribute to Darwin's theory

Struggle for existence

Vestigial structures

Traces of homologous organs that are very small and no longer used by the modern organism

Study of embryos

embryology