NOR is a chromosomal segment which contains several copies of the genes coding for 18 s and 28 s rNRA. This segment is found in humans on the secondary constriction site of the acrocentric chromosome (AC). A variant o...NOR is a chromosomal segment which contains several copies of the genes coding for 18 s and 28 s rNRA. This segment is found in humans on the secondary constriction site of the acrocentric chromosome (AC). A variant of NOR, double NOR (dNOR), has been found in some people. Deletion, repetition and elongated variants have also been found in previous studies. Light microscopic observations and satellite association (SA) silver staining techniques were used to measure展开更多
文摘NOR is a chromosomal segment which contains several copies of the genes coding for 18 s and 28 s rNRA. This segment is found in humans on the secondary constriction site of the acrocentric chromosome (AC). A variant of NOR, double NOR (dNOR), has been found in some people. Deletion, repetition and elongated variants have also been found in previous studies. Light microscopic observations and satellite association (SA) silver staining techniques were used to measure
