Reciprocal translocation versus centric fusion between two No. 13 chromosomes

1973 ◽  
Vol 12 (4) ◽  
pp. 235-244 ◽  
Author(s):  
Lillian Y.F. Hsu ◽  
Hyon J. Kim ◽  
Eva Sujansky ◽  
B. Kousseff ◽  
K. Hirschhorn
1968 ◽  
Vol 10 (3) ◽  
pp. 487-494 ◽  
Author(s):  
Herbert P. Riley ◽  
S. K. Majumdar

In one plant of a small-leaved form of Haworthia glauca a centric fusion type of reciprocal translocation was found between two long chromosomes with subterminal centromeres that interchanged to form a long metacentric and a short acrocentric chromosome; the latter is larger than the normal short chromosomes of the complement and consists of the short arms of the two original long chromosomes. In a typical plant of the same species a similar interchange was followed or accompanied by a second interchange between the short translocation chromosomes and a normal short chromosome to form a somewhat intermediate-sized acrocentric and a very short metacentric chromosome. In a plant of H. fulva a long and a short chromosome interchanged to produce two intermediate-sized acrocentric chromosomes. Possible evolutionary implications of these interchanges are discussed.


1973 ◽  
Vol 15 (4) ◽  
pp. 791-799 ◽  
Author(s):  
Alan R. Rushton

Staining for fluorescent bands and centromeric heterochromatin showed that normal mouse chromosomes could be identified as specific arms in most of the biarmed chromosomes of the mouse cell line LMTK–. Seven marker chromosomes were also characterized. The karyotype was heterogeneous with an average of 9.4 biarmed chromosomes per cell. Five specific biarmed chromosomes were present in at least 90% of the cells examined. The results indicate the presence of both relatively stable and highly variable components in the in vitro karyotype. Evidence is presented which indicates that the biarmed chromosomes have been formed by reciprocal translocation, centric fusion with retention of both centromeres, and centromeric misdivision with isochromosome formation.


1984 ◽  
Vol 44 (2) ◽  
pp. 219-224 ◽  
Author(s):  
Ursula Mittwoch ◽  
Shantha Mahadevaiah ◽  
Leslie A. Setterfield

SUMMARYTwo male-sterile chromosome anomalies, the insertion Is(7; 1)40H and the tertiary trisomy, Ts(512)31H, were found to be associated with reduced ovarian volumes in immature females. Together with the reciprocal translocation, T(11; 19)42H, in which this effect was described previously, reduced ovaries have been found in all three male-sterile chromosome anomalies investigated so far, suggesting that ovarian involvement is likely to be common in these conditions. Assuming that the smaller ovarian size reflects a reduction in the number of oocytes, it is suggested that male-sterile chromosome anomalies may exert basically similar deleterious effects on meiotic germ cells in males and females, the difference in outcome being due to cell-physiological differences between spermatocytes and oocytes and to the small number of surviving oocytes required for fertility in females.


1992 ◽  
Vol 52 (3) ◽  
pp. 367-370 ◽  
Author(s):  
K. Anamthawat-Jonsson ◽  
S.E. Long ◽  
P.K. Basrur ◽  
S. Adalsteinsson

1983 ◽  
Vol 10 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Kristina Vermaelen ◽  
Jean-Louis Michaux ◽  
Andries Louwagie ◽  
Herman Van Den Berghe

1966 ◽  
Vol 5 (5) ◽  
pp. 307-312 ◽  
Author(s):  
M.S. Herschler ◽  
N.S. Fechheimer
Keyword(s):  

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