Results 231 to 240 of about 226,802 (259)

A dicentric Robertsonian translocation in a Holstein cow

Theriogenology, 1979
A new dicentric Robertsonian translocation is described in a Holstein cow. The translocation appears to have arisen spontaneously from the centric fusion of autosomal acro centrics 14 and 28 which resulted in a diploid chromosome number of 59. Behavioral and phenotypic anomalies of the affected cow are discussed.
Thomas D. Bunch, S.M. Ellsworth, S.R. Paul   +2 more
openaire   +2 more sources

Robertsonian translocations: Clues to imprinting

American Journal of Medical Genetics, 1993
AbstractRobertsonian translocations, occurring with a frequency of about 1 in 10,000 livebirths, may be an important cause of uniparental disomy as demonstrated for 13/15, 13/14, 14/14, and 22/22 translocations. Dysmorphogenesis and/or mental retardation provide clinical clues for uniparental disomy in apparently balanced offspring of translocation ...
openaire   +2 more sources

Meiotic segregation of a 21; 22 Robertsonian translocation

Human Reproduction, 1992
In-vitro fertilization of hamster oocytes with human spermatozoa has been used to study heterozygotes for structural chromosome abnormalities. To date only four men heterozygous for Robertsonian translocations have been examined. In this study, 150 sperm chromosome complements from a 21;22 translocation were investigated.
R.M. Syme, Renee H. Martin
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A new type of Robertsonian translocation in cattle

Journal of Heredity, 1977
International ...
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Nucleolus organizer activity and the origin of Robertsonian translocations

Cytogenetic and Genome Research, 1978
Chromosomes with active nucleolus organizer regions (NORs) were identified by combined Q-banding, C-banding (in some cases), and silver staining in mouse cell lines. NOR-bearing chromosomes were overrepresented among the chromosomes involved in Robertsonian translocations in LM(TK-), A9, and RAG cell lines.
D.A. Miller, O.J. Miller, Trantravahi R, V.G. Dev   +3 more
openaire   +3 more sources

Radiation-induced nondisjunction and Robertsonian translocation in drosophila

Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 1974
Abstract In Drosophila melanogaster, gametes formed by oocytes in which Robertsonian translocations were induced in an immature stage usually show chromosomal imbalance. It is estimated that fewer than 20% of the gametes bearing newly induced Robertsonian translocations “fusing” X and fourth chromosomes are of balanced constitution. In contrast, when
openaire   +3 more sources

Robertsonian translocations in man: evidence for prezygotic selection

Cytogenetic and Genome Research, 1968
In the present paper, additional data on the segregation of the three types of Robertsonian translocations which occur in man are considered. In both t(DqGq) and t(DqDq) there is a significant excess of balanced heterozygotes over chromosomally normal progeny among the offspring of male heterozygotes, and this is considered to provide further evidence ...
openaire   +3 more sources

Are robertsonian translocations rare in cancers?

Cancer Genetics and Cytogenetics, 1997
Sen Pathak, Sen Pathak, Raj K. Kacker, Raj K. Kacker, Asha S. Multani   +4 more
openaire   +3 more sources

Hypospadias and Robertsonian Translocation

Urologia Internationalis, 2006
Giuseppe Ettore, Carmela Ingegnosi, Sebastiano Bianca, Antonella Cataliotti   +3 more
openaire   +2 more sources

Robertsonian translocation and extra microchromosome

Clinical Genetics, 1988
J J Waters, P J Howard
openaire   +2 more sources