biology essay
Jan. 24th
• No one sit in last 3 rows of seats • Drop-‐in 2me – cancelled next Wed. Jan. 29th • Will have on Thurs. Jan. 30th 10-‐11:30 am • Quiz 3 – Natural SelecAon
• Ch. 3: 3.3, 3.4, 3.5; Ch. 4: 4.2 • Simbio – will receive registraAon email • Midterm 1 – 2 weeks from today • Room assignments will be posted >3 days ahead
TransiAonal fossils à common ancestry & spp change through Ame
TransiAonal features for evoluAon of tetrapod limb
Have transiAonal fossils for evoluAon of: • Movement of land mammals to ocean; • Feathers & flight in birds; • Vascular Assue in plants; • Upright posture & large brains in humans;
• Jaws in vertebrates (animals w backbone) • Tetrapod limb (movement from water to land)
aquaAc
‘fishapod’
Evidence: spp are related (common ancestry) EXTINCTION
• species that no longer exist • ExAncAon = change ∴species living on Earth changed over Ame
TRANSITIONAL FORMS
sils
Fos
VESTIGIAL TRAITS
• Structure reduced funcAon à ing of no to marginal importance v es
Lipecito
survival/reproducAon of S organism; but found as funcAoning structure in other closely related spp
VesAgial structures: spp are related
• No one sit in last 3 rows of seats • Drop-‐in 2me – cancelled next Wed. Jan. 29th • Will have on Thurs. Jan. 30th 10-‐11:30 am • Quiz 3 – Natural SelecAon
• Ch. 3: 3.3, 3.4, 3.5; Ch. 4: 4.2 • Simbio – will receive registraAon email • Midterm 1 – 2 weeks from today • Room assignments will be posted >3 days ahead
TransiAonal fossils à common ancestry & spp change through Ame
TransiAonal features for evoluAon of tetrapod limb
Have transiAonal fossils for evoluAon of: • Movement of land mammals to ocean; • Feathers & flight in birds; • Vascular Assue in plants; • Upright posture & large brains in humans;
• Jaws in vertebrates (animals w backbone) • Tetrapod limb (movement from water to land)
aquaAc
‘fishapod’
Evidence: spp are related (common ancestry) EXTINCTION
• species that no longer exist • ExAncAon = change ∴species living on Earth changed over Ame
TRANSITIONAL FORMS
sils
Fos
VESTIGIAL TRAITS
• Structure reduced funcAon à ing of no to marginal importance v es
Lipecito
survival/reproducAon of S organism; but found as funcAoning structure in other closely related spp
VesAgial structures: spp are related