By Charles Tanford & Jacqueline Reynolds
Brno, the capital of Moravia, is a commercial city, containing the Augustinian monastery where Gregor Mendel discovered the laws of inheritance named after him. Part of the monastery is now a museum in his memory, called the Mendelianum. A patch of garden in front of the entrance is said to be Mendel’s actual experimental plot, where he did the thousands of hybridization experiments that were the basis for his results.
The number “2” is the magic number here. The statistics of Mendel’s results are the same as the statistics of tossing two coins simultaneously, and it made good sense to Mendel, for there are two sexes, allowing each metaphorical coin to be derived from one parent. It makes sense in modern terms, too, for chromosomes (not yet discovered in Mendel’s day) are generally paired. These basic principles emerge clearly from a visit to the museum, presented by means of detailed posters. Flowers planted in Mendel’s garden patch are also intended to help, but they are merely floral representations of numbers (three red and one white in the second generation, for example), unrelated to anything to do with hybridization. They may even cause confusion by obscuring the statistical nature of actual hybridization experiments.
The former refectory of the monastery now contains a sequence of showcases and posters to display the facts of Mendel’s life, education, and work, and they go on from there to a few highlights of modem genetics, such as the discovery of chromosomes and the role of DNA. Another room (a former chapter hall) is now a conference room, with contemporary furniture and a fine portrait of monk Gregor. There is also a good photograph of Mendel with some of his monastic colleagues, which shows them as anything but unworldly monks-it’s more like the annual group picture of a present-day departmental faculty.
Website: http://www.mendelianum.cz [in Czech]