AI Article Synopsis
- The study compares the ability of neutrons and X-rays to induce genetic crossing-over in male fruit flies (D. melanogaster) using specific radiation doses.
- Neutrons were found to be four times more effective in causing crossing-over in the spermatocytes of adult flies, with even higher effectiveness noted in pupal spermatocytes.
- The increased effectiveness of neutrons is linked to their high linear energy transfer, which contributes to more exchanges in spermatogonial cells, including early precursor cells.
Article 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.
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| http://dx.doi.org/10.1016/0027-5107(80)90034-2 | DOI Listing |
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