J. S. Otis
University of Minnesota
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Featured researches published by J. S. Otis.
Theoretical and Applied Genetics | 1990
Robert N. Shoffner; J. S. Otis; L. A. Snyder; K. S. Guise
SummaryIt is concluded that chromatin fragments derived from irradiated chicken spermatozoa are not viable vectors for gene transfer. In three experiments conducted at sequential intervals over a period of 1 1/2 years, no marker traits were found in 1,065 G0 progeny from irradiated spermatozoa of Minnesota Dominant Marker males inseminated into recessive Rhode Island Red and White Leghorn females. The inability to secure transformants is ascribed to the following factors: a maximum of five and probably fewer potential vector fragments for each G0 progeny because of irradiation effect on spermatozoan ability to enter the germinal disc; uncertainty of DNA integrity from highly irradiated chromatin; no known mechanism for release of chromatin fragments from irradiated spermatozoa supernumerary pronuclei; and the uncertainty of selective integration into the zygotic nucleus.
Cytogenetic and Genome Research | 1981
J. J. Bitgood; J. S. Otis; Robert N. Shoffner; N.S. Fechheimer
A chromosome analysis of a translocation in the domestic chicken ( Gallus domesticus ) revealed that it was a cyclical translocation involving chromosomes 1, 5, and 8. Meiotic prepara
Poultry Science | 1967
Robert N. Shoffner; Awtar Krishan; G. J. Haiden; R. K. Bammi; J. S. Otis
Poultry Science | 1990
A. Tajima; E.F. Graham; Robert N. Shoffner; J. S. Otis; D. M. Hawkins
Poultry Science | 1980
J. J. Bitgood; Robert N. Shoffner; J. S. Otis; W. E. Briles
Poultry Science | 1982
Robert N. Shoffner; R. Shuman; J. S. Otis; J. J. Bitgood; V. A. Garwood; P. C. Lowe
Poultry Science | 1993
Robert N. Shoffner; J. S. Otis; V. A. Garwood
Poultry Science | 1983
J. J. Bitgood; J. S. Otis; Robert N. Shoffner
Poultry Science | 1996
E. M. Shaw; J. S. Otis; S. J. Lamont; K. S. Guise; Robert N. Shoffner
Journal of Heredity | 1991
J. J. Bitgood; Robert N. Shoffner; J. S. Otis