The Cytogenic Effect of Sonic Energy Applied Simultaneously with X-Rays

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Abstract
The cytogenic effects of simultaneous treatment, of Tradescantia inflorescences with x-rays (250 r) and sonic energy (9100 cycles/ sec.) are described. Simultaneous treatment with sonic energy and x-rays increases the yield of x-ray induced chromosomal aberrations about 1.3 times the yield obtained with the same amt. of x-rays alone. The sonic treatment alone did not cause aberrations. The increased yield is probably due to an increased movement of chromosomes and chromosome fragments caused by the sonic treatment, resulting in a decrease in the amt. of restitution and an increase in the amt. of detectable new reunions between the broken ends of chromosomes.
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