ETH Grundlagen der Biologie IA

In the mid-1900s, the Soviet geneticist Lysenko believed that his winter wheat plants, exposed to ever-colder temperatures, would eventually give rise to ever more cold-tolerant winter wheat. His attempts were most in agreement with the ideas of

To observe natural selection's effects on a population, which of these must be true?

Which of the following must exist in a population before natural selection can act upon that population?

Which of the following statements most detracts from the claim that the human appendix is a completely vestigial organ?

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

Which of the following pairs of structures is least likely to represent homology?

Two closely related populations of mice have been separated for many generations by a river. Climatic change causes the river to dry up, thereby bringing the mice populations back into contact in a zone of overlap. Which of the following is not a possible