. 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. ru f i I I 5t M M I cot I N N. sp SI JlHcci! mIsl tit J\ Fig. 3.—A, the second chromosome (stippled) and the third chromosome (black) of a normal Drosophila melanogaster; B, the second and third chromosomes of an individual carrying a translocation in heterozygous condition; C, same of an individual homozygous for the same translocation. Below—chromosome plates of each of these three kinds o
. 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. ru f i I I 5t M M I cot I N N. sp SI JlHcci! mIsl tit J\ Fig. 3.—A, the second chromosome (stippled) and the third chromosome (black) of a normal Drosophila melanogaster; B, the second and third chromosomes of an individual carrying a translocation in heterozygous condition; C, same of an individual homozygous for the same translocation. Below—chromosome plates of each of these three kinds of individuals. of the translocations in Drosophila (Sturtevant's ^'-translocation— Dobzhansky and Sturtevant, 36), and has been observed cytologically in Allium (Levan, 57). Translocations involving lateral attachments can be reciprocal only if a very short section of the recipient chromosome is excised interstitially, and both the free end of the recipient chromosome and a fragment of the donor chromosome are attached to the broken end thus made available. An excision of a chromosome section and an inter- calation of a section of another chromosome in its place have, to be sure, been observed in Drosophila (Oliver, 88, and an undescribed translocation studied by Sturtevant, which has the chromosome structure shown in Fig. 3).. 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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Keywords: ., bookau, bookcentury1900, booksubjectbiology, booksubjectradiation
