Relationships and biodiversity pre lab review

  • 1,171 views
Uploaded on

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
1,171
On Slideshare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
10
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. New York State LabRelationships andBiodiversityPre-lab Review
  • 2. Evolution• Gradual change over time• If two organisms sharesimilarities, they are likelyrelated – share a commonancestor• The more similarities, themore closely related
  • 3. Evidence of Evolutionary Relationships• Structural evidence:– Comparative anatomy• Homologous structures• Vestigial structures– Comparative embryology
  • 4. Evidence of Evolutionary Relationships• Molecular evidence:– Comparative Biochemistry• Similar pigments (in plants)• Similar enzyme-controlled chemical reactions• Similarities in DNA structure• Similar proteins
  • 5. Structural Evidence in Plants• External structure• Seeds• Internal structure:– Conducting tissue – carries materials– Xylem – carries water and nutrients– Phloem – carries food
  • 6. Molecular Evidence in Plants• Pigments – absorb light• Chromatography – lab technique to separatepigments in plants
  • 7. Molecular Evidence in Plants• Enzymes – speed up chemical reactions• Enzymes are specific
  • 8. Molecular Evidence in Plants –Enzymes
  • 9. Molecular Evidence in Plants• Gel electrophoresis – labtechnique to separatefragments of DNA fromorganisms
  • 10. Molecular Evidence in Plants –Gel Electrophoresis
  • 11. Molecular Evidence in Plants• Similarities in DNA code for amino acidsequence in particular proteins
  • 12. Molecular Evidence in PlantsProtein Synthesis
  • 13. Molecular Evidence in Plants