Which of the following is not an example of evidence of descent from a common ancestor?     vestigial traits     homology     transitional features     the occurrence of extinction

If one were to look at the timeline of speciation, most organisms go through this process fairly slowly, this is with the exception of natural selection polyploidy reinforcement colonization

Which term means that any two species share an ancestor in the past? Common Descent O Descent with Modification

Which of the following is unlikely to contribute to natural selection Mutations of the somatic cells Mutations of the reproductive cells Natural disaster Infectious disease in the population

Common descent with modification implies that all species can trace their ancestory back to a shared ancestral organism True False

Which of the following mass extinctions caused the loss of over 80% of species and was due to increased volcanic activity in what is now Siberia, Russia?     The Permian-Triassic Mass Extinction     The Cretaceous-Paleogene Mass Extinction     The Triassic-Jurassic Mass Extinction     The Ordovician-Silurian Mass Extinction

In land mammals, the pelvic girdle is the point where the leg bones attach to the rest of the skeleton. Whales, which are descended from animals that lived on land, also have a small pelvic girdle. This would be an example of what type of evidence for evolution? DNA similarities anatomical similarities shared developmental pathways fossil evidence s 000 O

Which of the following is not considered an evolutionary mechanism ("force" )?     Mutation     Genetic drift     Natural selection     Migration (gene flow)     All are evolutionary mechanisms.

Evidence that supports the theory of evolution is found in the studies of O anatomy O biochemistry All of these options are correct fossils biogeography

It is known that it takes very long periods of time for new species to develop, and yet the fossil record for many organisms is characterized by long periods of Stasis (no change) followed by short bursts of intense Speciation (the disappearance of one species followed by the appearance of a new species). Thus in the fossil record, organisms seem to stay the same for long periods of time followed by a “sudden” change in the organisms (sudden with respect to evolution and geology). In other words, it appears that new species evolve suddenly as opposed to over long periods of time. The Theory of Punctuated Equilibrium helps to explain these seemingly contradictory occurrences in the fossil record. Discuss how Punctuated Equilibrium works (think about small offshoot populations that break off from the main population) and how it can explain the fossil record evidence. (Be sure to include information about why fossils of the offshoot population would be rare.)