Influence of Different Y Chromosomes on Secondary Nondisjunction in D. Melanogaster

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Females heterozygous for a wildtype X chromosome from a Samarkand stock and an chromosome of the composition [formula] were tested for the frequency of X-chromosomal non-disjunction and segregation of the X's when Y chromosomes of different types were present in the females. The Y chromosomes used were 1) a normal unmarked Y, 2) [formula], 3) [formula] and 4) [formula] (a chromosome which arose in one of our experiments and has not yet been analyzed). Since this was only a preliminary test no attempt was made to isogenize the stocks. Larger scale experiments are planned in which these and other Y's … continued below

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4 pages

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Hildreth, P. January 18, 1962.

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Females heterozygous for a wildtype X chromosome from a Samarkand stock and an chromosome of the composition [formula] were tested for the frequency of X-chromosomal non-disjunction and segregation of the X's when Y chromosomes of different types were present in the females. The Y chromosomes used were 1) a normal unmarked Y, 2) [formula], 3) [formula] and 4) [formula] (a chromosome which arose in one of our experiments and has not yet been analyzed). Since this was only a preliminary test no attempt was made to isogenize the stocks. Larger scale experiments are planned in which these and other Y's will be used and the genetic background will be strictly controlled.

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4 pages

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Digitized from microopaque cards (1).

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  • SuDoc Number: Y 3.At 7:22/UCRL-9984
  • Report No.: UCRL-9984
  • Accession or Local Control No: metadc1255494
  • Archival Resource Key: ark:/67531/metadc1255494

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  • January 18, 1962

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  • Feb. 5, 2022, 9:50 a.m.

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  • Feb. 8, 2023, 4:23 p.m.

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Hildreth, P. Influence of Different Y Chromosomes on Secondary Nondisjunction in D. Melanogaster, report, January 18, 1962; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc1255494/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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