Presentation is loading. Please wait.

Presentation is loading. Please wait.

Evolutionary Evidence

Similar presentations


Presentation on theme: "Evolutionary Evidence"— Presentation transcript:

1 Evolutionary Evidence
Fossil record Comparative anatomy Comparative Embryology Comparative Biochemistry Geographic distribution

2 Fossil Record Remains of once living organisms.
Found in sedimentary rock. Simpler forms of life at bottom. Limited: Type of material preserved (bone, shell, impressions, amber) Incomplete record Easily disrupted

3

4 Comparative Anatomy Homologous structures Vestigial structures

5 Homologous Structures

6 Vestigial Structures Human Salamander, Whale, Boa
Functional limb on salamander is probably Similar to the limb of common ancestor.

7 Comparative Embryology (Early 1800’s)
2006 UCBerkeley

8 Chick Embryo vs. Human Notice the human embryo has gill slits.
2006 UCBerkeley Notice the human embryo has gill slits.

9 Comparative Biochemistry
Similar DNA Sequences Similar Gene segments of the DNA Code for similar traits in closely related species

10 Similar DNA In Organisms
DNA Sequencing- 0.1% difference between any person. - 1.5% between human and chimp. . 2006 UCBerkeley


Download ppt "Evolutionary Evidence"

Similar presentations


Ads by Google