Barbara McClintock is most closely associated with which of the following?
A)the initial discovery of genetic transposition
B)the discovery of transposable elements in corn
C)the mutation rate in translocation heterozygotes
D)the demonstration of the presence of transposable elements in polytene chromosomes

Question

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Barbara McClintock is best known for her discovery of transposable elements in maize (corn) in the 1940s and 1950s. She observed that these elements could move within the genome, leading to new gene combinations and the development of unique phenotypes. This discovery challenged the prevailing dogma of the time, which held that genetic information was fixed and unchanging. McClintock's work ultimately earned her a Nobel Prize in Physiology or Medicine in 1983.

Barbara McClintock Is Most Closely Associated with Which of the Following