. Biological effects of radiation; mechanism and measurement of radiation, applications in biology, photochemical reactions, effects of radiant energy on organisms and organic products. Radiation; Biology. INDUCED CHROMOSOMAL ABERRATIONS IN ANIMALS 1179 cases. This is not so. Hence, either these translocations are simple, or the Y is especially likely to break very close to one of its ends. Since the discovery by Patterson, Stone, Bedichek, and Suche (109) that chromo- somes are likely to break near the free ends, this argument loses some of its force. The possibihty of the so-called "lat
. Biological effects of radiation; mechanism and measurement of radiation, applications in biology, photochemical reactions, effects of radiant energy on organisms and organic products. Radiation; Biology. INDUCED CHROMOSOMAL ABERRATIONS IN ANIMALS 1179 cases. This is not so. Hence, either these translocations are simple, or the Y is especially likely to break very close to one of its ends. Since the discovery by Patterson, Stone, Bedichek, and Suche (109) that chromo- somes are likely to break near the free ends, this argument loses some of its force. The possibihty of the so-called "lateral attachment" of chromosome fragments suggests also that simple translocations do occur. By lateral attachment is meant an attachment of a fragment not to an end of a broken or an unbroken chromosome, but to its side. Lateral attach- ments lead to formation of branched (Y-shaped) chromosomes. The existence of a lateral attachment is conclusively proved genetically in one 5 0(1 s ens ru 5t. ru f i I I 5t M M I cot I N N. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Duggar, Benjamin M. (Benjamin Minge), 1872-1956; National Research Council (U. S. ). Committee on the Effects of Radiation on Living Organisms; Clark, Janet Howell, b. 1889; Cole, Kenneth Stewart, 1900-; Daniels, Farrington, 1889-1972. New York and London, McGraw-Hill Book Co.
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