Wójcik Ewa, Smalec Elzbieta
Institute of Bioengineering and Animal Breeding, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland.
Folia Biol (Krakow). 2012;60(3-4):141-6. doi: 10.3409/fb60_3-4.141-146.
The study was aimed at evaluating the frequency of spontaneous sister chromatid exchange in Polish White Improved goats (Capra hircus). The mean number of SCEs/cell was 2.73 +/- 1.84. The effect of sex and age on SCE incidence was also investigated. No statistically significant differences in the number of SCEs/cell were observed between the males and females. On the other hand, age was found to significantly influence SCE frequency. A lower SCE frequency was observed in younger goats. A positive correlation between chromosome length and SCE number was identified. The longer the chromosome, the more exchanges occurred. The highest number of SCEs was observed in the interstitial region, the lowest in the distal area.
该研究旨在评估波兰改良白山羊（Capra hircus）自发姐妹染色单体交换的频率。每个细胞中姐妹染色单体交换的平均数为2.73±1.84。同时还研究了性别和年龄对姐妹染色单体交换发生率的影响。在雄性和雌性之间，每个细胞中姐妹染色单体交换的数量未观察到统计学上的显著差异。另一方面，发现年龄对姐妹染色单体交换频率有显著影响。在较年轻的山羊中观察到较低的姐妹染色单体交换频率。确定了染色体长度与姐妹染色单体交换数量之间存在正相关。染色体越长，发生的交换越多。在间质区域观察到最高的姐妹染色单体交换数量，在远端区域最低。
