Homology of chromosomes of the X genomes in common and Uruguayan dallisgrass, Paspalum dilatatum

Genome ◽  
1991 ◽  
Vol 34 (6) ◽  
pp. 950-953 ◽  
Author(s):  
Byron L. Burson
Keyword(s):  
Chromosome Pairing ◽  
Chromosome Numbers ◽  
The Other ◽  
Paspalum Dilatatum ◽  
Intraspecific Hybridization ◽  
The Common ◽  
Complete Sets ◽  
The Relationship ◽  
Metaphase I

Two biotypes of dallisgrass, Paspalum dilatatum Poir., designated common and Uruguayan, have chromosome numbers and genome formulas of 2n = 5x = 50 (IIJJX) and 2n = 6x = 60 (IIJJXX), respectively. The relationship between the X genomes in these two biotypes is unknown, and each was arbitrarily assigned the letter X to designate an unknown genome. This study was undertaken to determine the relationship between the X genomes in these two biotypes. Because both biotypes are apomicts and cannot be crossed, a sexual intraspecific F1 hybrid (2n = 45) between sexual yellow-anthered (2n = 4x = 40; IIJJ) and common dallisgrass biotypes was crossed with Uruguayan dallisgrass. This F1 hybrid has complete sets of the I and J genomes but only 5 of the 10 chromosomes of the X genome from common dallisgrass. Two hybrids were recovered. One had 52 and the other had 53 chromosomes, which associated at metaphase I as 22 bivalents + 8 univalents and 23 bivalents + 7 univalents, respectively. Twenty bivalents represent pairing of members of the I and J genomes, and those in excess of 20 represent pairing between members of the two X genomes. The remaining members of the X genome from the Uruguayan biotype were present as univalents at metaphase I. This demonstrates that those chromosomes of the X genome from the common biotype that were present are homologous to members of the X genome of the Uruguayan biotype. Both hybrids are aposporous facultative apomicts with some sterility.Key words: meiosis, intraspecific hybridization, chromosome pairing, genome relations, apomixis.

scholarly journals Evangelical and Catholic Timespace in Work: An Argument against a Homeless Eschatology

Religions ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 199
Author(s):  
Maria Ledstam
Keyword(s):  
Empirical Study ◽  
Common Good ◽  
Ethnographic Study ◽  
The Other ◽  
Faith Based ◽  
Business As Mission ◽  
Achievable Goal ◽  
The Common ◽  
The One ◽  
The Relationship

This article engages with how religion and economy relate to each other in faith-based businesses. It also elaborates on a recurrent idea in theological literature that reflections on different visions of time can advance theological analyses of the relationship between Christianity and capitalism. More specifically, this article brings results from an ethnographic study of two faith-based businesses into conversation with the ethicist Luke Bretherton’s presentation of different understandings of the relationship between Christianity and capitalism. Using Theodore Schatzki’s theory of timespace, the article examines how time and space are constituted in two small faith-based businesses that are part of the two networks Business as Mission (evangelical) and Economy of Communion (catholic) and how the different timespaces affect the religious-economic configurations in the two cases and with what moral implications. The overall findings suggest that the timespace in the Catholic business was characterized by struggling caused by a tension between certain ideals on how religion and economy should relate to each other on the one hand and how the practice evolved on the other hand. Furthermore, the timespace in the evangelical business was characterized by confidence, caused by the business having a rather distinct and achievable goal when it came to how they wanted to be different and how religion should relate to economy. There are, however, nuances and important resemblances between the cases that cannot be explained by the businesses’ confessional and theological affiliations. Rather, there seems to be something about the phenomenon of tension-filled and confident faith-based businesses that causes a drive in the practices towards the common good. After mapping the results of the empirical study, I discuss some contributions that I argue this study brings to Bretherton’s presentation of the relationship between Christianity and capitalism.

scholarly journals The interaction between two trains of impulses converging on the same motoneurone

1929 ◽  
Vol 105 (738) ◽  
pp. 363-371 ◽  
Keyword(s):  
Mechanical Effect ◽  
The Other ◽  
Muscle Fibres ◽  
Flexor Muscle ◽  
Afferent Pathways ◽  
Afferent Nerves ◽  
Maximal Stimulation ◽  
The Common ◽  
The Relationship ◽  
Stimulation Of

It was shown in an earlier paper (7) that if maximal stimulation of either of two different afferent nerves can reflexly excite fractions of a given flexor muscle, there are generally, within the aggregate of neurones which innervate that muscle, motoneurones which can be caused to discharge by either afferent (i. e., motoneurones common to both fractions). The relationship which two such afferents bear to a common motoneurone was shown, by the isometric method of recording contraction, to be such that the activation of one afferent, at a speed sufficient to cause a maximal motor tetanus when trans­mitted to the muscle fibres, caused exclusion of any added mechanical effect when the other afferent was excited concurrently. This default in mechanical effect was called “occlusion.” Occlusion may conceivably be due to total exclusion of the effect of one afferent pathway on the common motoneurone by the activity of the other; but facilitation of the effect of one path by the activation of the other when the stimuli were minimal suggests that, in some circumstances at least, the effect of each could augment and summate with th at of the other at the place of convergence of two afferent pathways. Further investigation, using the action currents of the muscle as indication of the nerve impulses discharged by the motoneurone units, has now given some information regarding the effect of impulses arriving at the locus of convergence by one afferent path when the unit common to both is already discharging in response to impulses arriving by the other afferent path. Our method has been to excite both afferent nerves in overlapping sequence by series of break shocks at a rapid rate and to examine the action currents of the resulting reflex for evidence of the appearance of the rhythm of the second series in the discharge caused by the first when the two series are both reaching the motoneurone.

Ch.11 Plurality of obligors and of obligees, s.1: Plurality of Obligors, Art.11.1.4

2015 ◽  
Author(s):  
Meier Sonja
Keyword(s):  
The Other ◽  
The Common ◽  
The Right ◽  
The Relationship

This commentary analyses Article 11.1.4 of the UNIDROIT Principles of International Commercial Contracts (PICC) concerning the effects of defences on the relationship between the obligee and the obligors. Under Art 11.1.4, a joint and several obligor against whom a claim is made by the obligee may assert all the defences and rights of set-off that are personal to it or that are common to all the co-obligors. However, the obligor may not assert defences or rights of set-off that are personal to one or several of the other co-obligors. This commentary discusses the common defences that the obligor can assert against the obligee, along with personal defences which involve the right to avoid the contract for mistake, fraud, threat, or gross disparity.

CYTOGENETIC, ECOLOGIC AND MORPHOLOGIC STUDIES IN BRAZILIAN FORMS OF PASPALUM DILATATUM

1968 ◽  
Vol 10 (1) ◽  
pp. 131-138 ◽  
Author(s):  
M. Irene B. De Moraes Fernandes ◽  
I. L. Barreto ◽  
F. M. Salzano
Keyword(s):  
Meiotic Behavior ◽  
Paspalum Dilatatum ◽  
Wide Range ◽  
Somatic Number ◽  
The Common ◽  
Metaphase I

The somatic number, meiotic behavior, morphology and ecology of five forms of Paspalum dilatatum Poir are reported. The sexual type yellow anther (2n = 40) showed essentially regular meiotic behavior. The common form (2n = 50) presented 20 II and 10 I in about 85% of the cells studied at diakinesis and metaphase I. Pauciciliatum (2n = 40) and Uruguaiana (2n = 60) showed a wide range of chromosome configurations at these stages; finally, Torres presented uniformly 60 univalents. These results are compared with morphologic and ecologic data and some suggestions about the possible mode of origin of these forms are presented.

Genome analysis of Elymus alatavicus and E. batalinii (Poaceae: Triticeae)

1986 ◽  
Vol 28 (5) ◽  
pp. 770-776 ◽  
Author(s):  
Kevin B. Jensen ◽  
Douglas R. Dewey ◽  
Kay H. Asay
Keyword(s):  
Chromosome Pairing ◽  
Genome Analysis ◽  
Taxonomic Classification ◽  
Meiotic Behaviour ◽  
Pseudoroegneria Spicata ◽  
Mode Of Reproduction ◽  
The Relationship ◽  
Partial Fertility ◽  
Metaphase I

Elymus alatavicus (Drob.) A. Love and E. batalinii (Krasn.) A. Love were studied to determine (i) meiotic behaviour, (ii) the mode of reproduction, (iii) the relationship between the two species, (iv) genomic constitutions, and (v) the most logical taxonomic classification of both species. A series of F1 hybrids between E. alatavicus, E. batalinii, and six "analyzer" species were developed. Chromosome pairing was studied at metaphase I to identify genomic similarities or differences. The results showed that E. alatavicus and E. batalinii are caespitose, self-fertile allohexaploids (2n = 42) with the same genomic formula SSYYXX. The F1 hybrids between E. alatavicus and E. batalinii had complete pairing (21 bivalents) at metaphase I in 7% of the cells and almost complete pairing in the remaining cells. High chromosome pairing and partial fertility (4 seeds/plant) in the F1 hybrids shows that the two species are closely related. Hybrids were obtained between E. alatavicus or E. batalinii and the following "analyzer" species with known genomic formulas: Pseudoroegneria spicata (Pursh) A. Love, 2n = 14, SS; P. cognata (Hack.) A. Love, 2n = 14, SS; E. lanceolatus (Scribn. &Smith) Gould, 2n = 28, SSHH; E. trachycaulus1 (Link) Gould ex Shinners, 2n = 28, SSHH; E. mutabilis (Drob.) Tzvelev, 2n = 28, SSHH; and E. drobovii (Nevski) Tzvelev, 2n = 42, SSHHYY. Chromosome pairing in this series of hybrids demonstrated that E. alatavicus and E. batalinii contain an S and probably a Y genome plus an unknown genome, X, that may have been derived from Psathryostachys huashanica Keng or from Agropyron. Elymus alatavicus and E. batalinii are correctly classified in the genus Elymus.Key words: cytotaxonomy, Agropyron, meiosis, chromosome.

scholarly journals Evolution of the YouTube Personas Related to Survival Horror Games

2021 ◽  
Vol 6 (2) ◽  
pp. 54-68
Author(s):  
Francesco Toniolo
Keyword(s):  
Emotional Reactions ◽  
The Other ◽  
The Common ◽  
The One ◽  
The Relationship

The indie survival horror game genre has given rise to some of the most famous game streamers on YouTube, especially titles like Amnesia: The Dark Descent (Frictional Games 2010), Slender: The Eight Pages (Parsec Productions 2012), and Five Nights at Freddy’s (Scott Cawthon 2014). The games are strongly focused on horror tropes including jump scares and defenceless protagonists, which lend them to displays of overemphasised emotional reactions by YouTubers, who use them to build their online personas in a certain way. This paper retraces the evolution of the relationship between horror games and YouTube personas, with attention to in-game characters and gameplay mechanics on the one hand and the practices of prominent YouTube personas on the other. It will show how the horror game genre and related media, including “Let’s play” videos, animated fanvids, and “creepypasta” stories have influenced prominent YouTuber personas and resulted in some changes in the common processes of persona formation on the platform.

scholarly journals Beyond the Walls: Locating the Common Denominator in Herod’s Landscape Palaces

2017 ◽  
Vol 10 (3) ◽  
pp. 37-48
Author(s):  
Evie Gassner
Keyword(s):  
The Other ◽  
Short Paper ◽  
Common Denominator ◽  
Structural Units ◽  
Building Projects ◽  
Personal Involvement ◽  
The Third ◽  
Close Study ◽  
The Common ◽  
The Relationship

Abstract The Question of King Herod's personal involvement in the Building Projects attributed to him was always one of the more dominant topics in the study of Herodian archaeology. The purpose of this short paper is to try and answer this question by researching and discussing the location of a ‘common denominator’ in the structure of Herod's “Landscape” palaces, through the study of the relationship each palace has with its surroundings. These palaces-the Promontory Palace in Caesarea, the Third Palace in Jericho, the Northern Palace in Masada and the Palace of Great Herodium-were chosen as case studies for their scale, architectural complexity and the unique connection they share with the landscape. While a close study of the interior of the palaces and their structural units show that each palace plan is unique and shares almost nothing in common with the other plans, a research of the landscape in which the palaces are located indicates that a common denominator to all four palaces can be found in the forms of the elements of water and the dramatic landscape. These two elements, combined with the uniqueness of the structures themselves, point to Herod's own involvement in the planning of the four “Landscape” palaces.

The Legal Innovations of the Pentateuchal Tithe Laws

2021 ◽  
pp. 1-25
Author(s):  
Chelcent Fuad
Keyword(s):  
The Other ◽  
Common Source ◽  
The Common ◽  
The Relationship

Abstract This article analyzes the relationship between the pentateuchal tithe laws in Lev 27:30–33; Num 18:21–32, and Deut 14:22–29 from a literary perspective and finds that (1) Lev 27:30–33 is the oldest tithe law in the Pentateuch that may have been the common source of the other pentateuchal tithe laws, (2) the tithe law in Num 18:21–32 may have been literarily dependent upon the tithe law in Deut 14:22–29, (3) the purpose of the legal revision of the pentateuchal tithe laws was to replace rather than to supplement the older legislation, and (4) the tithe law in Lev 27:30–33 may have been a product of the Priestly School, whereas the tithe law in Num 18:21–32 may have stemmed from the Holiness School albeit from a later stratum than H proper (Lev 17–26).

CHROMOSOME PAIRING IN HEXAPLOID HYBRIDS FROM BROMUS ERECTUS (2n = 28) × B. INERMIS (2n = 56)

1973 ◽  
Vol 15 (3) ◽  
pp. 427-436 ◽  
Author(s):  
K. C. Armstrong
Keyword(s):  
Chromosome Pairing ◽  
Interspecific Hybrids ◽  
Meiotic Chromosome ◽  
The Other ◽  
Meiotic Chromosome Pairing ◽  
Hybrid Plants ◽  
Quadrivalent Frequency ◽  
Bromus Erectus ◽  
Metaphase I

Meiotic chromosome pairing was studied at metaphase I of B. erectus (2n = 28), B. inermis (2n = 56) and interspecific hybrids from B. erectus × B. inermis (2n = 42). The B. erectus material averaged 2.08 IV + 0.11 III + 9.51 II + 0.35 I and B. inermis 0.05 VIII + 0.06 VI + 0.02 V + 2.25 IV + 0.11 III + 22.95 II + 0.25 I. The hybrid plants (2n = 42) averaged 0.18 VI + 1.90 IV + 0.19 III + 16.10 II + 0.39 I and one hybrid with 2n = 41 averaged 0.08 VI + 0.02 V + 0.95 IV + 0.50 III + 17.42 II + 0.72 I. Karyotype evidence supported the conclusion that B. erectus was an autotetraploid. The karyotype contains four large satellites and four subterminal chromosomes but the other four groups of four are median, with one group possibly a submedian. Since chromosome pairing in the hybrids was complete and the quadrivalent frequency in the parents and hybrids was similar, it was concluded that the genomic formula of B. erectus, B. inermis, and the hybrid was AAAA, AAAABBBB, and AAAABB, respectively.

Neurotological Findings in Diphenylhydantoine Intoxication

1973 ◽  
Vol 82 (3) ◽  
pp. 389-394 ◽  
Author(s):  
Michihiko Nozue ◽  
Masahiro Mizuno ◽  
Kimitaka Kaga
Keyword(s):  
Optokinetic Nystagmus ◽  
Animal Experiments ◽  
Clinical Findings ◽  
Postmortem Examination ◽  
The Other ◽  
Histological Findings ◽  
The Central Nervous System ◽  
The Common ◽  
The Relationship ◽  
Central Lesions

It is well known that diphenylhydantoine (DPH) can cause such side effects as gingivitis, hypertrichosis, ataxia, nystagmus, diplopia and others. Although there are many reports about DPH intoxication, very few papers mention the neurotological aspects of this condition. Three cases of DPH intoxication which manifested neurotological changes were treated. The common remarkable findings of these cases were equilibrium disturbance, gaze nystagmus and the absence and/or irregularity of optokinetic nystagmus (OKN). As other neurotological findings do not show any peripheral labyrinthine lesion, the equilibrium disturbances noticed in our cases probably did not originate from the labyrinth but from the central nervous system (CNS). The precise origin of gaze nystagmus noted in these cases has not yet been clarified. It seems to be evident, however, that this type of gaze nystagmus is not due to a peripheral labyrinthine lesion. It is well known that the inhibition or the disturbance of OKN may be caused by central lesions, but the origin or localization of the dysfunction in the CNS has not yet been clarified. On the other hand, animal experiments and postmortem examination of patients with DPH intoxication reveal that the main histologic lesions are located in the cerebellum, especially in the Purkinje cells. Although the precise localization of the lesions in our cases is not known the relationship between clinical findings and histological findings of DPH intoxication can be emphasized.

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