based on what they eat. One their teeth, because whales that feed on fish have s
ID: 220298 • Letter: B
Question
based on what they eat. One their teeth, because whales that feed on fish have significantly different 1) Which of the following would not be a useful procedure to perform in determining 012. In the North Pacific Ocean, two groups (Orcinus orca) appear to be forming two different group eats fish and the other eats mammals of the same species of killer whales such as seals. Scientists can tell what thev species wear patterns whether or not this speciation has occurred? (1 pt) a) Compare teeth of whales alive today to teeth of whales in ancient samples D) Compare DNA samples from fish-eaters and mammal-eaters. c) Compare stomach contents of whales from each to the two populations d) Compare body shape and color of whales from each population. 2) Which of the following describes the type of speciation event that is these whales? (1 pt) occurring in a) sympatric speciation b) allopatric speciation c) geographic speciation d) polyploidy speciation 3) Another difference between the two groups is in how they hunt. Whales that hunt fish tend to travel in large pods (groups of seals, however, tend to travel in very small groups and vocalize very little, likely because of the excellent hearing ability of seals. If these differences brought about whales) and vocalize often. Whales that hunt speciation, the separation would be considered (1 pt) a) habitat isolation b) temporal isolation c) behavioral isolation d) mechanical isolation Q13. A recent study in the peer-reviewed journal, Science, revealed that the -1 degree Celsius (~1.8 degrees F) warming that the Earth has experienced in the past 100 years has already caused physiological and morphological changes to large numbers of species. (3 pts, 1 pt each) a) Is this an example of micro- or macro-evolution? b) What's the mechanism driving these changes? (circle one) Genetic drift, mutation, founder effect, natural selection) artificial selection c) Would you expect climate change to cause the formation of new species (speciation) during the 21st century? Why or why not?Explanation / Answer
The answer for the above questions:
1) B - Compare DNA samples
2) A - Sympatric
3) C - Behavioral
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