FURTHER TEST OF POSSIBLE CORRELATION BETWEEN CROSS- LINKING AND CHROMOSOME BREAKING ABILITIES OF CHEMICAL MUTAGENS

Abstract
The frequencies of sex-linked lethals and translocations were determined in the progeny of Drosophila injected with either ethylene imine or 2:4; 6-tri (ethyleneimino)-l:3:5-triazine (TEM). The ratio of translocations to lethals was the smallest in the case of TEM-treatment. TEM did in fact induce fewer translocations that expected from the number of functional arms. It was concluded that the alkylating substances with polyfunctional arms are not more efficient in producing chromosome breakage than those with monofunc-tional arm.

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