The effects of x-rays on the chromosomes of locust embryos. 3. The chromatid aberration types.
The effects of x-rays on the chromosomes of locust embryos. 3. The chromatid aberration types.
复制标题
X 射线对蝗虫胚胎染色体的影响。
作者：
Fox Dp
在间期的S期和g2期，对群聚血吸虫胚胎细胞进行辐照，产生的染色单体畸变与在蚕豆等生物体中观察到的染色单体畸变相同，这些染色单体畸变已广泛用于放射细胞学研究。此外，还发现了一系列新颖的交换内畸变。为了解释这些，evwell的交换假说已经扩展到包括等焦原发病变的参与。交换型假设是首选，因为它可以更容易地适应所发现的整个畸变谱。
Irradiation ofSchistocerca gregariaembryo cells during the S and G2stages of interphase produces the same general classes of chromatid aberration as have been seen in organisms, such asVicia faba, which have been used widely in radiocytological work. In addition, however, a series of intrachange aberrations has been found which is novel. In order to account for theseRevell's exchange hypothesis has been extended to include the involvement of isolocus primary lesions. The exchange-type hypothesis is preferred because it can more readily accomodate the whole spectrum of aberrations found.