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中子和X射线对果蝇雄性诱导交叉互换的相对有效性。

Relative effectiveness of neutrons and X-rays in induction of crossing over in Drosophila males.

作者信息

Kale P G

出版信息

Mutat Res. 1980 Sep;72(2):177-86. doi: 10.1016/0027-5107(80)90034-2.

DOI:10.1016/0027-5107(80)90034-2
PMID:6777688
Abstract

Relative biological effectiveness of neutrons vs. X-rays in inducing crossing-over in males of D. melanogaster was investigated using 812 and 834 rad of neutrons and the same dose of X-rays. Crossing-over was induced in spermatocytes and spermatogonia of adults and pupae. Neutrons were 4 times more effective in spermatocytes of adults and their effectiveness in pupal spermatocytes was even more. Neutrons also induced more exchanges in spermatogonial cells including predefinitive spermatogonia. Higher effectiveness of neutrons can be attributed to their high linear energy transfer.

摘要

使用812拉德和834拉德的中子以及相同剂量的X射线，研究了中子与X射线在诱导黑腹果蝇雄性个体发生交换方面的相对生物学效应。交换发生在成虫和蛹的精母细胞及精原细胞中。中子在成虫精母细胞中的有效性是X射线的4倍，在蛹精母细胞中的有效性更高。中子在包括前确定精原细胞在内的精原细胞中也诱导了更多的交换。中子的较高有效性可归因于其高传能线密度。

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