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If one possesses a family photograph album covering three or four generations of ancestors and close relatives, one has therein a convincing demonstration of the inheritance of many normal human traits. Professor Whitney has made liberal use of his own family photographs as illustrations for his book. The best part of the book consists largely of photographic illustrations of the recurrence of similar characters in two or more generations of a family. These characters include shape of the ears, nose, lips, chin, jaws and teeth; form, color and pattern of head hair, face and body hair; shape, color and peculiarities of the eyes; shape, size and peculiarities of the hands and feet, fingers and toes, and finger and toe nails; peculiarities of the skin such as dimples and freckles; general health and vigor; temperamental traits and special abilities, and numerous other miscellaneous human traits revealed by photographs. For the physician
Family Treasures: A Study of the Inheritance of Normal Characteristics in Man. JAMA. 1943;122(10):714. doi:10.1001/jama.1943.02840270072036
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