BIO 1130 Lecture Notes - Lecture 1: Allopatric Speciation, Hybrid Zone, Anagenesis
1 Oct 2016
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Advanced characters,
Allopatric speciation, some major event occurs that physical changes the populations, like continental
drift. The genetic component changes over time.
Anagenesis, a species that slowly morphologicaly changes over time to become a different species
Apomorphy, Derived characters within a group (evolutionary lineage)
Autoapomorphy,
Autopolypoloidy,
Behavioural isolation, singing or expressing a pattern to attract a certain type of the species
Biological species, groups of interbreeding population which are reproductively isolated from other such
groups
Character polarity,
Clade,
Cladistics, (use slide 27)
Cladogenesis, splitting groups that creates new species ( not slow like anagenesis), one group stays while
the other changes
Cladogram, everything in a branching pattern, which breaks off due to a special "fork"(some special
characteristics about the species) into 2 branches, one of them stops and the others continue for the
remaining descendants
Common ancestor,
Derived character,
Ecological isolation, in completely different habitats so they'll never meet
Extinction,
Fusion,
Gametic isolation, animal egg can recognize its own sperm
Henning, an entomologist who gives a new way of organizing the living world using phylogeny
Hybrid zone,
Hybrid breakdown, if we get hybrids that can't produce viable young, but they could attempt to
reproduce, but the young will die (the salamander example where the young will die because they don't
have the appropriate color)
Hybrid viability,
Hybridization,
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Document Summary
Allopatric speciation, some major event occurs that physical changes the populations, like continental drift. Anagenesis, a species that slowly morphologicaly changes over time to become a different species. Apomorphy, derived characters within a group (evolutionary lineage) Behavioural isolation, singing or expressing a pattern to attract a certain type of the species. Biological species, groups of interbreeding population which are reproductively isolated from other such groups. Cladogenesis, splitting groups that creates new species ( not slow like anagenesis), one group stays while the other changes. Cladogram, everything in a branching pattern, which breaks off due to a special fork(some special characteristics about the species) into 2 branches, one of them stops and the others continue for the remaining descendants. Ecological isolation, in completely different habitats so they"ll never meet. Gametic isolation, animal egg can recognize its own sperm. Henning, an entomologist who gives a new way of organizing the living world using phylogeny.
