Beltran I C, Robertson F W, Page B M
Ann Hum Genet. 1979 Jan;42(3):315-25. doi: 10.1111/j.1469-1809.1979.tb00665.x.
C-banded chromosome preparations were obtained from cord blood from normal newborns and venous blood from abnormal newborns and the corresponding fathers. There is significant heterogeneity between individuals in euchromatin and especially heterochromatin lengths of the Y chromosome. The average dimensions of the Y of fathers of normal and abnormal babies do not differ. Y chromosomes from cord blood appear more condensed than from venous blood and the consequences are not removed by the use of the Y/F index. Such differences have not been considered in reported apparent variation in the size of the Y chromsome in relation to criminality.
从正常新生儿的脐带血、异常新生儿及其相应父亲的静脉血中获取了C带染色体标本。在常染色质尤其是Y染色体异染色质长度方面，个体之间存在显著的异质性。正常和异常婴儿父亲的Y染色体平均尺寸并无差异。脐带血中的Y染色体比静脉血中的Y染色体显得更为浓缩，并且使用Y/F指数也无法消除这种差异。在已报道的与犯罪行为相关的Y染色体大小的明显变化中，尚未考虑到此类差异。
