Excerpt from Heredity Amongst many other problems of heredity, Professor Pearson and his pupils have investigated the inheritance of stature in man. They proceeded by measuring, in a great many instances, the height of a father and one or more of his sons. The average height of all the men measured was about five feet eight inches. It was found that if one considered by itself the group of fathers measuring about six feet, the average height of their sons was about five feet ten. Further, if one took by itself the group of ...
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Excerpt from Heredity Amongst many other problems of heredity, Professor Pearson and his pupils have investigated the inheritance of stature in man. They proceeded by measuring, in a great many instances, the height of a father and one or more of his sons. The average height of all the men measured was about five feet eight inches. It was found that if one considered by itself the group of fathers measuring about six feet, the average height of their sons was about five feet ten. Further, if one took by itself the group of fathers measuring five feet six, the average height of their sons was about five feet seven. That is, tall or short fathers tended to have tall or short sons respectively, but the resemblance as regards stature was only partial. In other words, variations in stature were inherited, but only to a limited extent. Professor Johannsen of Copenhagen has carried out an investigation on similar lines with regard to the size of the seed in beans. Taking the seeds from a single plant, be separated the large from the small, and planted each lot separately. From the resulting plants, when ripe, he took the seeds and weighed them; he found no difference in the average size of the seed in the two lots. He repeated this experiment several times, and kept on selecting for several generations, but always with the same result. Variations in the size of seed, within a single race, were not inherited at all. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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