Повнотекстовий пошук
Пошуковий запит: (<.>A=Davidovich N$<.>) |
Загальна кількість знайдених документів : 2
Представлено документи з 1 до 2
|
1. |
Podunay Yu. A. Mating system and two types of gametogenesis in the fresh water diatom Ulnaria ulna (Bacillariophyta) [Електронний ресурс] / Yu. A. Podunay, O. I. Davidovich, N. A. Davidovich // Альгология. - 2014. - Т. 24, № 1. - С. 3-19. - Режим доступу: http://nbuv.gov.ua/UJRN/algol_2014_24_1_3 Sexual reproduction and mating system of the freshwater diatom Ulnaria ulna (Nitzsch) Compere were studied by using clonal cultures. Mating system of the species involves homo- and heterothallic modes of reproduction; and both male and female clones were capable of homothallic reproduction. Two types of gametogenesis corresponding to two mating types were investigated. Analysis of the crossing table, gamete morphology, and sex distribution in the progeny resulted from intraclonal reproduction provided evidences that anisogamy and two mating types were determined in U. ulna genetically; male and female clones were hetero- and homogametic correspondently. Specific active movement of male gametes caused by the formation and retraction of pseudopodia-like structures on the gamete surface was described. The absence of reproductive isolation between clones gathered from geographically distant populations suggests continuity and broad distribution of the species.
| 2. |
Davidovich N. Communicative mechanisms for transforming the mass into the collective (in terms of internally displaced persons) [Електронний ресурс] / N. Davidovich, O. Khyzhniak // Evropský politický a právní diskurz. - 2017. - Sv. 4, Vyd. 2. - С. 166-176. - Режим доступу: http://nbuv.gov.ua/UJRN/evrpol_2017_4_2_28
|
|
|