The Relation Between X-Ray Sensitivity and Stages of Development of Treated Cells in Spermato- and Spermiogenesis of Drosophilia Melanogaster

Journal Article · Mon May 01 04:00:00 EDT 1961 · Hereditas

DOI:https://doi.org/10.1111/j.1601-5223.1961.tb01858.x· OSTI ID:4829267

SÄVHAGEN, RUTH

By using a dual-purpose stock it was possible to study the frequency of induced XO males and induced non-disjunction between the paternal X and Y chromosomes in Drosophila after 0 to 1 and 3 to 4 day old y/sup 16/; sc/ssup 8/Y males were irradiated (1100 r) and mated to virgin y w sn females in successive mating periods. The first mating period was delimited to 0 to 4 hours after irradiation but from the 4th day and on each mating period consisted of 24 hours. lt is shown that irradiation of Drosophila males causes non-disjunction between the paternal X and Y chromosomes. Hence, the occurrence of an increase in the frequency of non-disjunction in sperm ejaculated during a limited period after irradiation must be taken as an indication that those spermatozoa were in meiosis at the time of treatment. Factors which may influence this cell stage/ sensitivity relationship are discussed.

• Research Organization: Univ. of Stockholm
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-020176
• OSTI ID: 4829267
• Journal Information: Hereditas, Journal Name: Hereditas Journal Issue: 1 Vol. 47; ISSN 0018-0661
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANIMAL CELLS
BIOLOGY AND MEDICINE
CHROMOSOMES
GENETICS
GONADS
INSECTS
MEIOSIS
MITOSIS
MUTATIONS
RADIATION DOSES
RADIOSENSITIVITY
SEX
X RADIATION