ap biology - unit 7: gene flow & speciation

timestamps

• 0:00

  Preventing Gene Flow

• 0:34

  Flies on Different Foods

• 1:05

  Chemical Separation in Flies

• 1:35

  Time for Adaptations

• 2:06

  Reproductive Isolation Barriers

• 2:37

  Allopatric vs Sympatric Speciation

• 3:07

  Allopatric Speciation Example

• 3:38

  Sympatric Speciation Challenges

• 4:08

  Preventing Gene Flow Sympatrically

• 4:38

  Tree Pollen Barrier

• 5:09

  Isthmus of Panama Example

• 5:41

  Fish Evolution Differences

• 6:12

  Apple Maggot Flies

• 6:42

  Adapting to Niches

• 7:13

  Apple vs Hawthorne Trees

• 7:46

  Reduced Gene Flow

• 8:48

  Habitat Differentiation

• 9:19

  Lizard Habitat Examples

• 9:50

  Sexual Selection

• 10:21

  Polyploidy in Plants

• 10:52

  Lizard Size and Location

• 11:22

  Dinosaur Mating Preferences

• 11:55

  Haploid vs Diploid Errors

• 12:25

  Meiosis Errors

• 12:56

  Plant Self-Fertilization

• 13:27

  Tetraploid Species Formation

• 13:58

  Summary of Barriers

• 14:29

  Adaptive Radiation