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

TLS Online TPP Program

#Question id: 11709

#XL - S Microbiology

Which process results in genetic recombination, but is separate from the process wherein the population size of Paramecium increases?

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#Question id: 447

#XL - S Microbiology

In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (DG'°) of 23.8 kJ/mol.  Under what conditions encountered in a normal cell will the free-energy change (DG) be negative, enabling the reaction to proceed spontaneously to the right?

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#Question id: 5258

#XL - S Microbiology

Which of the following processes are not correct for conjugation?

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#Question id: 4135

#XL - T Zoology

In the “activation” of an amino acid for protein synthesis:

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#Question id: 4942

#XL - T Zoology

Which of the following has not yet been synthesized in laboratory experiments studying the origin of life?