MacroevolutionLEC16 Flashcards
What prevents members of two species from producing viable hybrids?
Reproductive isolation!
What impede mating or hinder fertilization if different species attempt to mate?
Prezygotic barriers!
What prevent a hybrid zygote from developing into a fertile adult?
Postzygotic barrier!
What defines a species in terms of its appearance?
The morphospecies concept!
What defines species in terms of morphologically discrete species known only from the fossil record?
The paleospecies concept!
What defines species as a set of organisms with unique genetic history?
The phylogenetic species concept!
What views a species in terms of its ecological niche?
Ex. Hula
The ecological species concept!
This speciation occur when a new species forms after isolation.
Allopatric!
This speciation occur when part of a population becomes a new species without geographic separation.
Sympatric!
What is the evolution of a group of taxa from a common ancestor? This happens when a species is introduced to a new environment.
Ex. Cichlid fishes
Adaptive radiation!
What is one of the world’s great showcases of adaptive radiation?
The Hawaiian archipelago!
What bird is one of a diverse group of honeycreepers? What are they decended from?
I’iwi
Common house finch
