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TLS Online TPP Program

#Question id: 4632

Which of these conditions should completely prevent the occurrence of natural selection in a population over time?

#Section 2: Evolution

  1. All variation between individuals is due only to environmental factors.

  2. The environment is changing at a relatively slow rate.

  3. The population size is large.

  4. The population lives in a habitat where there are no competing species present.

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TLS Online TPP Program

#Question id: 16779

#Section 3: Mathematics and Quantitative Ecology

Find the Median of given Grouped data. 
TLS Online TPP Program

#Question id: 4648

#Section 2: Evolution

In a hypothetical environment, fishes called pike-cichlids are visual predators of algae-eating fish (i.e., they locate their prey by sight). If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following should least likely be observed in the algae-eater population over the course of many generations?
TLS Online TPP Program

#Question id: 16799

#Section 5: Applied Ecology & Evolution

Nipah henipaviral is a ______ borne virus
TLS Online TPP Program

#Question id: 9579

#Section 1: Ecology

Allen’s rule states that,
TLS Online TPP Program

#Question id: 12756

#Section 5: Applied Ecology & Evolution

Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.


The most likely cause for the shift in caterpillar peak mass is