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TLS Online TPP Program

#Question id: 8852

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?

#Section 2: Evolution
  1. Humans and bats evolved by natural selection, and whales evolved by Lamarckian mechanisms.
  2. Forelimb evolution was adaptive in people and bats, but not in whales.
  3. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.
  4. Genes mutate faster in whales than in humans or bats.
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TLS Online TPP Program

#Question id: 9204

#Section 2: Evolution

Which of the following observations provides the best evidence of a biodiversity crisis?
TLS Online TPP Program

#Question id: 9205

#Section 2: Evolution

Which of the following terms includes all of the others?
TLS Online TPP Program

#Question id: 9206

#Section 2: Evolution

To better comprehend the magnitude of current extinctions, it will be necessary to ________.
TLS Online TPP Program

#Question id: 9207

#Section 2: Evolution

Loss of biodiversity matters not only with regard to mammals or other vertebrates, but also microbes. Why are microbes worthy of discovery and protection from extinction?
TLS Online TPP Program

#Question id: 9208

#Section 2: Evolution

Which of the following threats to biodiversity is targeted at specific species rather than groups of species?
TLS Online TPP Program

#Question id: 9209

#Section 2: Evolution

Introduced species can have deleterious effects on biological communities by ________.