Ch 13 How Biological Diversity Evolves Flashcards
The focal study of macroevo
The origin of species
Macroevolution
Major biological changes in the fossil record
The multiplication of species
The origin of evolutionary novelty
Explosive diversification that follows mass extinction
The two patterns of evolution?
Non- branching evolution and branching evolution
Reproductive Barriers Between Species?
Pre-zygotic barriers and post-zygotic barrier
two main Mechanisms of Speciation?
Allopatric speciation and sympatric speciation
The Tempo of Speciation？
time required for speciation in most cases is relatively short compared to the overall duration of the species
Two parts are included in the evolution of biological novelty?
- Adaptation of Old Structures for New Functions
* “Evo-Devo”: Development and Evolutionary Novelty
How to use radiometric-dating method to reckon age of fossils?
By comparing the observed abundance of radioactive isotope and its decay products, using known decay rates
When did Pangaea form?
About 250 million years ago, near the end of the Paleozoic era
two massive extinction？When?
- At the end of the Cretaceous period, about 65 million years ago
- The Permian extinctions at the time forming the Pangea(250 m. year ago), caused over 90% of the marine species extinction and terrestrial life.
Which eight main taxonomic categories do Hierarchical Classification have?
Species, genus, family, order, class, phylum, kingdom
the five-kingdom classification scheme and the three-domain classification scheme?
a) Monera, Protista, Plantae, Fungi, Animalia
b) Bacteria, Archaea, Eukarya
Term Explain-Species
population or group of population whose members have potential to interbreed with one another in nature to produce fertile offspring, but cannot interbreed with members of other species
