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Your search keyword '"Jacobs, Patricia"' showing total 40 results
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40 results on '"Jacobs, Patricia"'

3. The Xyy Male

Author

Brown, W. M. Court, Price, W. H., and Jacobs, Patricia A.

Published
1968

7. An Analysis of the Break Points of Structural Rearrangements in Man.

Author

Jacobs, Patricia A., Buckton, Karin E., Cunningham, Catherine, and Newton, Marjorie

Abstract

The distribution of the points of breakage and reunion of a series of 58 Robertsonian translocations, 53 reciprocal translocations, and 10 inversions is described. An excess of 13/14 and 14/21 rearrangements was found among the Robertsonian translocations, this excess being independent of the method of ascertainment of the proband. The distribution of break points between chromosome arms in the reciprocal translocations, with the possible exception of the long arms of chromosome 11, was no different from that expected on the basis of their relative lengths. However, within arms there appeared to be an excess of breaks in the terminal regions, an excess of terminal/centromeric translocations where ascertainment was through a balanced carrier and a possible excess of terminal/median translocations where ascertainment was through an unbalanced carrier. Nine inversions were analysed and three of these involved identical break points on chromosome 8. Possible reasons for the apparent non-randomness of points of breakage and exchange are discussed and it is concluded that the techniques of preparation, methods of observations, and methods of ascertainment all affect the distribution of observed points of breakage and exchange and must therefore be taken into cognizance in any study of chromosome rearrangements in man. [ABSTRACT FROM PUBLISHER]

Published
1974

16. The Motion of a Distinguished Particle in an Infinite Particle System.

Author

STANFORD UNIV CALIF DEPT OF OPERATIONS RESEARCH, Jacobs,Patricia A., STANFORD UNIV CALIF DEPT OF OPERATIONS RESEARCH, and Jacobs,Patricia A.

Abstract

At time zero the positions of atoms on the real line form a Poisson process. Each atom has mass one and travels with a random but constant velocity on the line independent of the other atoms. At time zero a distinguished particle is placed at the origin. Its motion is caused by collisions with the atoms. An atom is removed from the system when it collides with the particle. The joint distribution of the mass and velocity of the particle after a collision with an atom may depend on the mass and velocity of the colliding atom and the mass and velocity of the particle before collision. The random counting measure induced by the positions and velocities at the time of the particle's n(th) collision of those atoms that have not yet collided with the particle has the same probability law as that of the random measure induced by the positions and velocities of all the atoms at time zero. It then follows that the mass-velocity process of the particle is a regular step Markov process and its transition function is computed. (Author Modified Abstract)

Published
1973

18. A Random Measure Model for the Emission of Pollutants by Vehicles on a Highway.

Author

STANFORD UNIV CALIF DEPT OF OPERATIONS RESEARCH, Jacobs,Patricia A., STANFORD UNIV CALIF DEPT OF OPERATIONS RESEARCH, and Jacobs,Patricia A.

Abstract

The report develops and proves a mathematical theorem for the prediction of air pollution emissions by vehicles on highways. The theorem assumes the velocity of each vehicle to be independent of the velocities of the other vehicles.

Published
1973

30. SEGMENTAL ANEUPLOIDY AND THE GENETIC GROSS STRUCTURE OF THE DROSOPHILA GENOME

Author

Lindsley, Dan L, primary, Sandler, L, additional, Baker, Bruce S, additional, Carpenter, Adelaide T C, additional, Denell, R E, additional, Hall, Jeffrey C, additional, Jacobs, Patricia A, additional, Miklos, George L Gabor, additional, Davis, Brian K, additional, Gethmann, R C, additional, Hardy, R W, additional, Hessler, A, additional, Miller, Steven M, additional, Nozawa, Hiroshi, additional, Parry, Dilys M, additional, and Gould-Somero, M, additional

Published
1972
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39. THE CHROMOSOMES OF GOAT × SHEEP HYBRIDS

Author

HANCOCK, J. L. and JACOBS, PATRICIA A.

Abstract

It has been known for many years (Warwick, Berry & Horlacher, 1932, 1933, 1934) that goats readily conceive when inseminated with ram semen but that the hybrid embryos fail to survive beyond the second month of pregnancy. Berry (1938) concluded from an examination of cells from the hybrid amnion that the death of the foetus was unlikely to be due to abnormalities of cell division. The sheep has fifty-four chromosomes comprising six metacentric chromosomes and forty-eight acrocentric chromosomes, while the goat has sixty chromosomes all of which are acrocentric. Berry found the chromosome number of the hybrid to be fifty-seven, but he noted only two metacentric chromosomes.Berry's illustrations give clear evidence that the techniques available to him yielded preparations greatly inferior to those produced by

Published
1966
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