HETEROGENEITY AMONG SPERMATOGONIA OF DROSOPHILA MELANOGASTER IN SENSITIVITY TO X-RAYS

Journal Article · Fri Nov 01 04:00:00 EST 1963 · Genetical Research (England)

DOI:https://doi.org/10.1017/S0016672300003839· OSTI ID:4132584

Slizynska, H

Sensitivity of Drosophila melanogaster male germ-cells to chromosome breakage by x rays was measured by the structural changes found in the salivary gland chromosomes of larvae from irradiated fathers and untreated mothers. The genetical effectiveness of irradiation on the same males was measured by the frequency of sex-linked lethals. Assessed by the overall percentage of germ- cells carrying structural changes, sensitivity follows the wellknown pattern: it is highest in spermatids and decreases over spermatozoa and spermatocytes to spermatogonia. This overall sensitivity was analyzed on three levels. The fact that the sensitivity of spermatogonia varies both between and within individual males was tentatively attributed to the presence or absence of spermatogonial mitoses. (auth)

• Research Organization: Inst. of Animal Genetics, Edinburgh
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-008155
• OSTI ID: 4132584
• Journal Information: Genetical Research (England), Journal Name: Genetical Research (England) Vol. Vol: 4; ISSN GENRA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BIOLOGY AND MEDICINE
CHROMOSOMES
CYTOLOGY
DROSOPHILA
EMBRYOS
GLANDS
INSECTS
MITOSIS
MUTATIONS
QUANTITY RATIO
RADIATION EFFECTS
RADIOSENSITIVITY
REPRODUCTION
SALIVARY GLANDS
SPERMATOGONIA
VARIATIONS
X RADIATION