牛同线群U7，在《国际细胞遗传学命名法》（ISCNDA）中先前被指定为G带25号染色体，现归属为R带29号染色体。
Bovine synteny group U7, previously assigned to G-banded chromosome 25 in the ISCNDA nomenclature, assigns to R-banded chromosome 29.
作者信息
Eggen A, Oustry A, Vaiman D, Ferretti L, Fries R, Cribiu E P
机构信息
INRA, Laboratoire de Génétique biochimique et de Cytogénétique, Centre de Recherches de Jouy, Jouy-en-Josas, France.
出版信息
Hereditas. 1994;121(3):295-300. doi: 10.1111/j.1601-5223.1994.00295.x.
Four microsatellite-containing bovine cosmids have been regionally localized by fluorescence in situ hybridization to bovine R-banded chromosome 29 (BTA29) and to the 1;29 translocated chromosomes. PCR-analyses of a somatic hybrid cell panel assigned the four microsatellites to synteny group U7. One of the cosmids (IDVGA7) has been previously mapped to G-banded BTA25 allowing to assign U7 to this chromosome. Hence, it is concluded that G-banded BTA25 corresponds to R-banded BTA29. The occurrence of other misleading nomenclatures for small bovine chromosomes is discussed.
通过荧光原位杂交技术，已将四个含微卫星的牛人工染色体区域定位到牛R带29号染色体（BTA29）以及1；29易位染色体上。对一个体细胞杂种细胞系进行的PCR分析将这四个微卫星定位到同线群U7。其中一个人工染色体（IDVGA7）先前已定位到G带BTA25上，从而可将U7定位到该染色体上。因此，可以得出结论，G带BTA25与R带BTA29相对应。文中还讨论了小型牛染色体其他误导性命名的情况。
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