X-RAY SENSITIVITY OF SPERMATOGONIA AND SPERMATOZOA IN DROSOPHILA MELANOGASTER

Journal Article · Sat May 26 04:00:00 EDT 1962 · Nature

DOI:https://doi.org/10.1038/194797a0· OSTI ID:4829239

Ytterborn, K H

Experiments were conducted to determine if, after irradiation of young spermatogonia, other mutations behave in a manner similar to the induced crossing- over work of Savhagen. A chromosome free from lethals was isolated and x-ray doses of 900 r used. Spermatogonta were irradiated in larvae, and after eclosion the males were mated in two periods for lethal tests. Spermatozoa in adult males were also irradiated for comparison. The rate of chromosomes with lethals is approximately 3 times higher for spermatozoa than for spermatogonia after irradiation. A higher rate of independentiy induced lethals and a lower rate of clusters were found in the mating period 0 to 3 days than in the period 15 to 18 days after eclosion, while there is no significant dtfference tn the rates of chromosomes with lethals; the results agree well with those of Savhagen. Possible explanations of the results are discussed. (D.L.C.)

• Research Organization: Univ. of Stockholm
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-020197
• OSTI ID: 4829239
• Journal Information: Nature, Journal Name: Nature Vol. Vol: 194
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANIMAL CELLS
BIOLOGY AND MEDICINE
CHROMOSOMES
GONADS
INSECTS
LIFETIME
MUTATIONS
RADIATION DOSES
RADIATION EFFECTS
RADIOSENSITIVITY
SEX
X RADIATION