How did the study of physics with Professors Doppler and Ettinghausen influence Mendel's understanding of genetics?
What will be an ideal response?
Doppler, an experimental physicist famous for the Doppler effect, espoused a "particulate" view of physics and taught Mendel how to separate individual characteristics from one another in experiments. Professor Ettinghausen taught Mendel the mathematics of combinatorial analysis. Mendel would apply each of these lessons to his later research. Mendel's superior insight came principally from his familiarity with quantitative thinking and his understanding of the particulate nature of matter learned through the study of physics with Doppler. Central to Mendel's experimental success was counting the number of progeny with specific phenotypes. This logical and now routine component of data-gathering was the key to Mendel's ability to formulate the hypotheses that explained his results. Under Doppler and Ettinghausen, Mendel learned to study individual properties of matter separately and to think in quantitative terms about combinations of outcomes.
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