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Biology 191 > Chapter 22 The Origin of Species > Flashcards

Chapter 22 The Origin of Species Flashcards

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1
Q

Allopatric speciation

A

forms a new species while GEOGRAPHICALLY isolated

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2
Q

sympatric speciation

A

a subset forms a new species w/o geographic seperation

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3
Q

polyploid

A

extra sets of chromosomes

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4
Q

macroevolution

A

broad changes above the species level

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5
Q

radiometric dating

A

determines ages fossils

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6
Q

what are the oldest known fossils called?

A

stromalites

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7
Q

what are stromalites

A

rocks formed by the accumulation of sedimentary layers on bacterial mats

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Biology 191 (2 decks)

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