Robbins L G
Genetics. 1974 May;77(1):105-14. doi: 10.1093/genetics/77.1.105.
The exchange behavior of non-attached, whole arm, X chromosome inversions was reexamined using nondisjunction in XXY females as an indirect measure of the frequency of nonexchange tetrads. Crossing over is quite normal in these inversion heterozygotes and is independent of the arrangement of the basal heterochromatin.
利用XXY雌性中的不分离现象作为非交换四分体频率的间接指标,对非附着的整条臂X染色体倒位的交换行为进行了重新研究。在这些倒位杂合子中,交叉互换相当正常,且与基部异染色质的排列无关。