title: Biological investigations aboard biosatellite Cosmos-782.
abstract: The Cosmos-782 flight from 25 November to 15 December 1975, carried biological experiments designed to study the effects of weightlessness on insects and fish and on gravitropism and growth in several seed varieties. Investigations carried out on Drosophila melanogaster measured the frequency of recessive lethal mutations and the change in genetic distances in the sex chromosome. The study of Fundulus heteroclitus eggs and fry compared the effects of weightlessness and artificial gravity. Plants experiments studied spatial orientation of over and underground organs of Pinus silvestris and Crepis capillaris seeds. Other investigations used Phycomyces blakesleanus to compare spatial orientation and growth and development in weightlessness and artificial gravity.
authors.affiliation: Institute of Biomedical Problems, USSR Ministry of Health, Moscow, USSR.
authors.forename: G P
authors.initials: GP
authors.lastname: Parfyonov
authors.forename: R N
authors.initials: RN
authors.lastname: Platonova
authors.forename: M G
authors.initials: MG
authors.lastname: Tairbekov
authors.forename: Y N
authors.initials: YN
authors.lastname: Belenev
authors.forename: V P
authors.initials: VP
authors.lastname: Olkhovenko
authors.forename: A V
authors.initials: AV
authors.lastname: Rostopshina
authors.forename: E A
authors.initials: EA
authors.lastname: Oigenblick
mesh_terms: D000818:Animals; D002498:Centrifugation; D027468:Crepis / Q000254:growth & development; D004331:Drosophila melanogaster / Q000235:genetics / Q000254:growth & development; D004625:Embryo, Nonmammalian; D023781:Fundulidae / Q000196:embryology / Q000254:growth & development; D018522:Gravitropism / Q000502:physiology*; D018470:Gravity, Altered; D009154:Mutation; D010800:Phycomyces / Q000254:growth & development; D028223:Pinus / Q000254:growth & development; D012639:Seeds / Q000254:growth & development*; D013026:Space Flight; D014893:Weightlessness