title: [Incidence of the 1/29 Robertsonian translocation in the cattle population in Czechoslovakia].
abstract: We studied the inheritance of a serious chromosomal aberration--Robertsonian translocation 1/29 (R.t.1/29) in the female and male progeny of three successive generations after five heterozygous sires, carriers of this chromosomal aberration. Of the total number of 43 progenies that were examined cytogenetically, we found in ten sons of the second successive generation R.t.1/29 in 50% and in 26 daughters in 53%. In the third successive generation we found out this chromosomal aberration in one of two bullocks and in none of five heifers. In all cases we recorded the diploid chromosome number 59,XYt or 59,XXt in heterozygous constitution, in 100% of all examined mitoses. The translocation is of a monocentric type. The results including the data on the fertility of sires do not, however, demonstrate explicitly the reduced fertility of sires with this aberration, or of their progeny, as mentioned by some researchers.
mesh_terms: D000818:Animals; D002417:Cattle / Q000235:genetics*; D005260:Female; D007621:Karyotyping / Q000662:veterinary; D008297:Male; D014178:Translocation, Genetic
vernacular_title: Výskyt Robertsonovy translokace 1/29 v populaci skotu CSR.