Chapter 24: The Origin of Species

cormorant BBC-Galapagos/#55:45 Flightless Cormorant
species Western meadowlark: yellow throat touches cheek; biological species NA asexual/fossils.
mule Hinny male horse, female donkey.
prezygotic Gametic isolation in next figure! Bradybaena is diff from Euhadra snail.
BBC-Galapagos/#2:08:50 Blue-footed Booby mating: foot-lifting, sky-pointing; 10:20 diving
speciation-allopatric SW desert Ammospermophilus harrisii (Harris's antelope squirrel) SW AZ; A. leucurus (White-tailed Antelope Squirrel) CA.
Kaibab darker body, separated 10K years ago, now subspecies. Mules on Kaibab and Bright Angel.
speciation-sympatric HAWTHORNS. Apple grafting (align cambium layer) + pollen from compatible cultivar.
autopolyploidy Anaphase is tetraploid.
allopolyploidy REVU: Nondisjunction meiosis I; hybrid's chromosomes are not homologous. COTTON, tobacco
cichlid Color -> territorial. Fusion discussed next.
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8eSQ 1=B 2=a 3=c 4=e 5=d 6=c