Journal
CYTOGENETIC AND GENOME RESEARCH
Volume 156, Issue 4, Pages 197-203Publisher
KARGER
DOI: 10.1159/000494289
Keywords
Cattle; Interchromosomal effect; Robertsonian translocation; Sperm-FISH
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Robertsonian translocations are the most frequent chromosomal rearrangements detected in cattle. Here, we report on the detection of a new Robertsonian translocation between chromosomes BTA3 and BTA16. This rob(3; 16) was dicentric, suggesting that its occurrence was recent. FISH analysis of decondensed sperm nuclei revealed a relatively low rate of unbalanced gametes produced by adjacent segregation (5.87%). In addition, and for the first time in bovines, a significant interchromosomal effect (ICE) was detected for 2 different autosomes: BTA17 (global disomy + nullisomy rate of 9%) and BTA20 (1.8%). These results suggest that ICE should be taken into consideration when assessing the putative effect of Robertsonian translocations on reproduction. (C) 2018 S. Karger AG, Basel
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