Page33

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Title Exploring human heredity
Subject Heredity, Human; Medical genetics; Adaptation (Biology)
Description Twentieth Annual Frederick William Reynolds Lecture.
Creator Stephens, Fayette Ellsworth, 1890-
Publisher Extension Division, University of Utah
Date 1956-01-16
Date Digital 2008-05-29
Type Text
Format image/jpeg
Digitization Specifications Original scanned on Epson Expression 10000XL flatbed scanner and saved as 400 ppi uncompressed tiff. Display images generated in PhotoshopCS and uploaded into CONTENTdm Aquisition Station.
Resource Identifier http://content.lib.utah.edu/u?/reynolds,362
Source LD5526 .U8 n.s. v.47 no.11
Language eng
Relation Digital reproduction of "Exploring human heredity" J. Willard Marriott Library Special Collections
Rights Digital Image Copyright University of Utah
Metadata Cataloger Seungkeol Choe; Ken Rockwell
ARK ark:/87278/s64q7rxv
Setname uu_fwrl
Date Created 2008-07-29
Date Modified 2008-07-31
ID 319670
Reference URL https://collections.lib.utah.edu/ark:/87278/s64q7rxv

Page Metadata

Title Page33
Description EXPLORING HUMAN HEREDITY 33 While man reacts to the same principles of heredity as do other organisms, he differs from them in that he has the ability to think and to plan his own environment. If his inheritance does not provide him with sufficient covering to keep his body warm in cold climates, he changes the environment by providing shelter and clothing. By the use of antibiotics in some cases he saves weaklings who would otherwise be eliminated by natural selection. The advent of new sources of radiant energy and new knowledge of its effect on gene mutations is another challenge to man. In the late nineteen-twenties, Muller and Stadler, working independently, demonstrated that radiation can greatly increase the rate of mutations in insects and plants. We now know that the effects of radiation are cumulative and that if it is increased beyond the load to which organisms are normally accustomed there will be an increase in the mutation rate. These mutations are generally injurious so that an increase in the normal radiation load will undoubtedly increase the frequency of harmful mutations that man now carries. As we enter the Atomic Age, this is a startling realization. The explosion of atomic bombs and the liberation of radiation in future atomic industrial plants, if not properly safeguarded, may increase the mutation load in man to a point which will create at least a serious population problem. Man is gradually being forced by circumstances to understand the factors which cause mutations and to use this information in preventing the genetic deterioration of the race. Whether he will ever be able to employ these factors in a positive way to improve the genetic makeup of the race is a question which the future alone can answer. Man is a variable organism. Each individual is practically a new creation because of his inheritance. Mutation supplies new genes and recombination of genetic factors produces new genetic individuals. Humanity contains an infinite variety of genes good and bad. From a purely genetic standpoint it would be possible to bring any particular genes together in almost any desired combination. This would make possible the production of individuals far superior to anything that we now know. This, however, would involve more than a knowledge of genetics. It would involve an understanding of human nature and a knowledge of what is really superior in man. Before man attempts to reconstruct the human race, much
Format image/jpeg
Identifier 033-RNLT-StephensF_Page33.jpg
Source Original Manuscript:Exploring human heredity by Fayette E. Stephens.
Setname uu_fwrl
Date Created 2008-07-29
Date Modified 2008-07-29
ID 319667
Reference URL https://collections.lib.utah.edu/ark:/87278/s64q7rxv/319667