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Cytogenetics of inherited partial sterility in three generations of the large milkweed bug as related to holokinetic chromosomes
The transmission of complex chromosome rearrangements and fragments for 3 generations of outcrossing correlates with the persistence of sterility in this species possessing holokinetic chromosomes.
Direct inguinal herniation in men: a disease of collagen.
Radiosensitivity of developing reproductive cells in female Cochliomyia hominivorax.
In female Cochliomyia hominivorax, radiation-induced dominant lethal changes in the reproductive cells (which develop synchronously) were measured by egg-hatchability tests and correlated with…
Chemosterilant studies on Bracon (Hymenoptera: Braconidae) sperm. I. Sperm inactivation and dominant lethal mutations.
Eight chemosterilants were investigated to determine whether they produced sterility by the induction of dominant lethal mutations, sperm inactivation, or both, and tretamine and metepa produced complete sterility without any evidence of sperm in activation.
Comparative effects of chemosterilants on spermatogenic stages in the house fly. I. Induction of dominant lethal mutations in mature sperm and gonial cell death.
Chemosterilant Studies on Bracon Sperm. II. Studies of Selected Compounds for Induction of Dominant Lethal Mutations or Sperm Inactivation
Most sterility was attributed to the induction of dominant lethal mutations; however, significant amounts of sperm inactivation were detected when the sulfonates and nitrogen mustard were administered.
Cytology of oögenesis in chemosterilized screw-worm flies, Cochliomyia hominivorax, as related to endomitosis in nurse cells.
Treatment with an alkylating agent when the nurse-cell chromosomes are undergoing endomitotic replication completely disrupts this process and prevents the nucleus of these cells from attaining the proper degree of ploidy and the size required for normal vitellogenesis.
Comparative effects of chemosterilants on spermatogenic stages in the house fly. II. Recovery of fertility and sperm transfer in successive matings after sterilization with 1,3-propanediol…
- L. Lachance, M. Degrugillier, A. Leverich
- BiologyAnnals of the Entomological Society of America
- 16 March 1970
M Males that mated repeatedly after treatment with the chemosterilant recovered their fertility and became as fertile as the controls after 7-8 matings, but the males that did not remate repeatedly did not recover fertility.