The figure above represents the findings of an observation study that examined the selection pressure of pre-dation on group size and behavior in guppies. Interpret the graphs and explain the results
What will be an ideal response?
ANS:
Will vary, but should include: group size increases as predations pressures increase, and the percentage of fish found in larger groups increases with increasing predation.
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What personal characteristics and events in Gregor Mendel's life significantly contributed to his ultimate contribution to the study of inheritance?
A. His training in physics and mathematics at the University of Vienna. B. He failed his physics exam. C. He failed his natural history exam. D. He got his teaching license at the age of 21. E. He got a job as a substitute teacher and enjoyed it.
The following events occur during the initiation of a skeletal muscle contraction. Put the following events in order of occurrence starting with the first event
a. signal travels along motor neuron b. calcium is released c. action potential moves down T tubules d. action potential arrives at neuromuscular junction e. action potential travels along muscle fiber membrane f. acetylcholine is released g. myosin binds actin h. binding of acetylcholine triggers an action potential in a muscle fiber i. action potential arrives at sarcoplasmic reticulum
The first plant to colonize the plains of Mount Saint Helens after this volcano erupted in 1980 was a prairie lupine
The prairie lupine is therefore an example of ____.
a. a secondary successor b. a pioneer species c. a keystone species d. an exotic species e. an introduced species
Social insect colonies are composed of highly specialized groups called what?
A. clines B. ecotypes C. castes D. species E. filial relatives