THE RADIATION-INDUCED MUTATION RATE FOR RECESSIVE SEX-BOUND LETHAL FACTORS IN SPERMATOGONIA AND MATURE SPERM OF DROSOPHILA MELANOGASTER AFTER IRRADIATION IN AIR AND NITROGEN (in German)
Journal Article
·
· Strahlentherapie (West Germany)
OSTI ID:4207453
The mutation rate (MR) for recessive sex bound lethal and semilethal factors was determined on sperms of Drosophila melanogaster whdch fentilized 0 to 24 plus or minus 1/2 hours and spermatogonia which fertilized 21 to 24 days after irradiation by 2000 r in air. On irradiated mature spsrms a MR of 3.42% for lethal and of 0.73% for semilethal factors was found. After irradiation of spermatogonda 0.41% lethal and 0% semilethal factors were observed. Therefore about 9 times more recessive lethal factors were observed on the mature sperms than on the spermatogonia. The same types of germ cells were irradiated in pure nitrogen with the same dose and the MR determined for lethal and semilethal factors. On sperms a MR of 2.86% lethal and 0.30% semilethal factors was found. On spermatogonia the MR was 0.40% lethal and 0.20% semilethal factors. The presence of pure nitrogen during the irradiation therefore has no protective effect on the formation of recessive sex bound lethal factors in spermatogonia. There seems to be a slight protsctive effect in mature sperms which is, however, not well enough founded by statistical data. (auth)
- Research Organization:
- Universitat, Zurich
- NSA Number:
- NSA-14-000061
- OSTI ID:
- 4207453
- Journal Information:
- Strahlentherapie (West Germany), Journal Name: Strahlentherapie (West Germany) Vol. Vol: 110; ISSN STRAA
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
Similar Records
THE DEPENDENCE OF THE RATE OF RADIO-INDUCED TRANSLOCATIONS AND RECESSIVE SEX-LINKED LETHAL FACTORS ON THE SPERMATOGENESIS STAGE IN DROSOPHILA MELANOGASTER
HETEROGENEITY AMONG SPERMATOGONIA OF DROSOPHILA MELANOGASTER IN SENSITIVITY TO X-RAYS
EFFECT OF TREATMENT WITH X RAYS COMBINED WITH AIR, NITROGEN, AND OXYGEN IN DROSOPHILA MELANOGASTER STUDIED USING SEX-LINKED LETHAL RECESSIVES
Journal Article
·
Thu Dec 31 23:00:00 EST 1959
· Z. Vererbungslehre
·
OSTI ID:4083379
HETEROGENEITY AMONG SPERMATOGONIA OF DROSOPHILA MELANOGASTER IN SENSITIVITY TO X-RAYS
Journal Article
·
Thu Oct 31 23:00:00 EST 1963
· Genetical Research (England)
·
OSTI ID:4132584
EFFECT OF TREATMENT WITH X RAYS COMBINED WITH AIR, NITROGEN, AND OXYGEN IN DROSOPHILA MELANOGASTER STUDIED USING SEX-LINKED LETHAL RECESSIVES
Journal Article
·
Sun Dec 31 23:00:00 EST 1961
· Atti Associazone Genetica Italiana (Italy)
·
OSTI ID:4808597