Synaptonemal Complex Analysis of Sex Chromosome Pairing in the Common Ground Skink, Scincella lateralis (Sauria, Scincidae)

Copeia ◽  
1990 ◽  
Vol 1990 (4) ◽  
pp. 1114 ◽  
Author(s):  
Marshal C. Hedin ◽  
Philip D. Sudman ◽  
Ira F. Greenbaum ◽  
Jack W. Sites
Keyword(s):  
Synaptonemal Complex ◽  
Chromosome Pairing ◽  
Common Ground ◽  
Complex Analysis ◽  
Sex Chromosome ◽  
Synaptonemal Complex Analysis ◽  
The Common ◽  
Scincella Lateralis

Synaptonemal complex analysis of hybrid cattle. III. Meiotic pairing mechanisms in F1 Brahman × Hereford hybrids

Genome ◽  
1991 ◽  
Vol 34 (2) ◽  
pp. 228-235 ◽  
Author(s):  
A. E. Dollin ◽  
J. D. Murray ◽  
C. B. Gillies
Keyword(s):  
Synaptonemal Complex ◽  
Chromosome Pairing ◽  
Complex Analysis ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Meiotic Pairing ◽  
Homoeologous Chromosome ◽  
Homoeologous Chromosome Pairing ◽  
Synaptonemal Complex Analysis ◽  
Complex Hybrid

The mechanisms of homoeologous chromosome pairing were studied in synaptonemal complex (SC) spreads of F1 Brahman (Bos indicus) × Hereford (Bos taurus) cattle. The most common SC abnormalities were bivalents with partial pairing failure and interlocks. While C-band polymorphisms could underlie most of the SC abnormalities observed in the full-blood cattle, other causes seem also to be contributing in the hybrids. The pattern of the abnormalities indicates that genie differences between the species were probably involved. Pachytene substaging data suggest that in some spreads, early pachytene bivalents with partial pairing failure may achieve complete synapsis or may be converted to interlocks by late pachytene.Key words: synaptonemal complex, hybrid cattle, interlocks.

Synaptonemal complex analysis of hybrid cattle. I. Pachytene substaging and the normal full bloods

Genome ◽  
1989 ◽  
Vol 32 (5) ◽  
pp. 856-864 ◽  
Author(s):  
A. E. Dollin ◽  
J. D. Murray ◽  
C. B. Gillies
Keyword(s):  
Electron Microscopy ◽  
Synaptonemal Complex ◽  
Chromosome Pairing ◽  
Complex Analysis ◽  
Bos Taurus ◽  
Meiotic Chromosome ◽  
Early Pachytene ◽  
Meiotic Chromosome Pairing ◽  
Synaptonemal Complex Analysis

Meiotic chromosome pairing abnormalities in full-blood and hybrid Bos taurus and B. indicus cattle have been surveyed by electron microscopy of pachytene synaptonemal complex spreads. In this paper, the full-blood spreads are described in detail, including the use of XY and nucleolar morphology and other measured parameters for pachytene substaging. Pairing abnormalities were observed in up to 9% of the full-blood spreads. Most of these pairing abnormalities (83%) occurred in early-pachytene spreads, suggesting that the mechanism of synaptic adjustment may operate in cattle.Key words: synaptonemal complex, cattle, pachytene substages.

Synaptonemal complex analysis in spermatocytes of tilapia, Oreochromis niloticus (Pisces, Cichlidae)

Genome ◽  
1993 ◽  
Vol 36 (6) ◽  
pp. 1124-1128 ◽  
Author(s):  
Fausto Foresti ◽  
Claudio Oliveira ◽  
Pedro Manoel Galetti Junior ◽  
Lurdes Foresti de Almeida-Toledo
Keyword(s):  
Synaptonemal Complex ◽  
Sex Chromosomes ◽  
Oreochromis Niloticus ◽  
Complex Analysis ◽  
Sex Chromosome ◽  
Light And Electron Microscopy ◽  
Nucleolus Organizer ◽  
Nucleolus Organizer Regions ◽  
Synaptonemal Complex Analysis ◽  
Sex Chromosome System

Some adaptations of the synaptonemal complex (SC) whole-mounting technique first used in plants permitted its application to meiotic studies in tilapia, Oreochromis niloticus. Direct observation of the chromosome pairing process and bivalent structure during the meiotic prophase of this fish species by light and electron microscopy permitted the analysis of SCs in autosomes and the possible identification of sex chromosomes. The analysis of SCs in spermatocytes of O. niloticus revealed that all 22 bivalent chromosomes completely paired, except for the occurrence of a size heteromorphism in the terminal region of the largest bivalent associated with the presence of an incompletely paired segment during the synapsis process, which may be the cytological visualization of an XX/XY sex chromosome system in this species.Key words: fish cytogenetics, synaptonemal complex, fish meiosis, sex chromosomes, nucleolus organizer regions.

Synaptonemal Complex Analysis of Sex Chromosomes in Two Species of Sceloporus

Copeia ◽  
1990 ◽  
Vol 1990 (4) ◽  
pp. 1122 ◽  
Author(s):  
Kent M. Reed ◽  
Philip D. Sudman ◽  
Jack W. Sites ◽  
Ira F. Greenbaum
Keyword(s):  
Synaptonemal Complex ◽  
Sex Chromosomes ◽  
Complex Analysis ◽  
Synaptonemal Complex Analysis

Synaptonemal complex analysis of X-7 translocations in male mice

Chromosoma ◽  
1982 ◽  
Vol 87 (2) ◽  
pp. 149-164 ◽  
Author(s):  
Terry Ashley ◽  
Liane B. Russell ◽  
N. L. A. Cacheiro
Keyword(s):  
Synaptonemal Complex ◽  
Complex Analysis ◽  
Male Mice ◽  
Synaptonemal Complex Analysis

scholarly journals Synaptonemal complex analysis of an X-autosome translocation-carrier in the domestic pig

1991 ◽  
Vol 23 (Suppl 1) ◽  
pp. S222 ◽  
Author(s):  
DAF Villagomez ◽  
M Świtoński ◽  
B Singh ◽  
KRS Fisher ◽  
I Gustavsson ◽  
...  
Keyword(s):  
Synaptonemal Complex ◽  
Complex Analysis ◽  
Translocation Carrier ◽  
Domestic Pig ◽  
Autosome Translocation ◽  
Synaptonemal Complex Analysis

Synaptonemal complex analysis in primary spermatocytes of cattle x zebu hybrids (Bos taurus × Bos indicus)

1990 ◽  
Vol 107 (1-6) ◽  
pp. 229-238 ◽  
Author(s):  
M. Switonski ◽  
H. A. Ansari ◽  
A. Matthew ◽  
H. R. Jung ◽  
G. Stranzinger
Keyword(s):  
Synaptonemal Complex ◽  
Complex Analysis ◽  
Bos Taurus ◽  
Bos Indicus ◽  
Synaptonemal Complex Analysis
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