Report of the Secretary-treasurer of the Pacific Division for the Calendar Year Ending.
نویسنده
چکیده
exceptional daughter (the F2 from the X-rayed female) was fertile in a second matinge with an eosin-eyed miniature-winged male (the first mating was sterile) and produced one exceptional daughter (white-eyed and normalwinged). Of the five exceptional males (F, from the X-rayed female) two were proved to be fertile. The exceptional female (F3 from the X-rayed female) proved fertile when mated with an eosin-eyed miniature-winged male and produced one exceptional daughter (F4 of the X-rayed female). Since onlv one of the two exceptional females was fertile more data is required before it can be assumed that the exceptional females formed as a result of X-rays applied to the egg are fertile anCd produce fulrther exceptions. The experiments described confirm my earlier findings that X-rays may be made to affect the germ cells and show further that the efifect produced on the first generation, so far as at present investigated, is identical with primary iiondisjunction. The writer wishes to express his indebtedness to the Research Laboratorv of tlle General Electric Company for their continued interest in this work, to Dr. T. H. MTorgan and Dr. C. B. Bridges for helpful criticism and suggestions and to Mr. 0. J. Irish for technical assistance. JAMES AV. MAVOR UNION COLLEGE, SCHENECTADY, N. Y.
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عنوان ژورنال:
- Science
دوره 55 1420 شماره
صفحات -
تاریخ انتشار 2005