A duck egg is removed from its mother’s nest and incubated by a barnyard hen. The duckling hatches out in the presence of the barnyard hen and stays in her nest. After a couple of days, the duckling is presented with a choice between its biological mother and the hen that incubated it. The duckling approaches and follows the hen. This set of observations demonstrates the phenomenon of

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#Question id: 12126

#Unit 10. Ecological Principles

Which of the following describes a successional event in which one organism makes the environment more suitable for another organism?

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#Question id: 8840

#Unit 9. Diversity of Life Forms

There are at least a dozen known species in the extinct genus Lystrosaurus. If each species was suited to a quite different environment, then this relatively large number of species is likely due to

TLS Online TPP Program

#Question id: 3834

#Unit 3. Fundamental Processes

In his transformation experiments, what phenomenon did Griffith observe?

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#Question id: 14853

#Unit 13. Methods in Biology

If the sum of the mean and the variance of a Binomial distribution for 18 trials is 10, find the distribution

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#Question id: 14517

#Unit 13. Methods in Biology

The probability that a certain beginner at golf gets a good shot if he uses the correct club is 1/3 and the probability of a good shot with an incorrect club is 1/4. In his bag are 5 different clubs, only one of which is correct for the shot in question. If he chooses a club at random and takes a stroke, the probability that he gets a good shot is