EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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why there are so many species in the world today
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why there are so few transitional fossils
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why it takes so long for speciation to happen
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why speciation can happen in only some organisms
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Detailed explanation-1: -In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history.
Detailed explanation-2: -Not every transitional form appears in the fossil record, because the fossil record is not complete. Organisms are only rarely preserved as fossils in the best of circumstances, and only a fraction of such fossils have been discovered.
Detailed explanation-3: -Punctuated equilibrium (4 of 8) No preservation No preservation: No fossils representing transitional forms are preserved because of their relatively small population size, the rapid pace of change, and their isolated location.
Detailed explanation-4: -The theory holds that species originate too rapidly to enable their origins to be traced by paleontologists (punctuation), and then persist unchanged through geological time in stasis (equilibrium). All is due to a mysterious shared homeostasis that is postulated to regulate the collective morphology of individuals.