The Genetic Nature of Taxonomic Differences

New isotope hydrogeochemical data on two types of thermal water from the Bang spring (Kuang Binh province, central Vietnam) are reported in the work. The first type includes HCO3–Cl–Na–Mg water with extremely low mineralization (44–87 mg/dm3) and pH variations from weakly acidic to weakly alkaline values (5.71–7.84). The second type includes HCO3–Na water with mineralization up to 256–659 mg/dm3 and pH 8.03 to 8.51. The studied types differ significantly in temperature: 24.3–34.5°C in the first type and 62.1–97.1°C in the second type. The analysis of the distribution of oxygen (δ18O) and hydrogen (δD) isotopes carried out for the first time confirms different genetic nature of these hydrogeochemical water types. The first type has an atmospheric genesis (δ18O = –7.3…–6.2‰ and δD = –51.4…–39.3‰), while the second type restricted to the Kien Giang–Bang intersection zone has a deeper source (δ18O = –1.6…–1.3‰ and δD = –22.2…–21.4‰). The tritium (3H) data also point to different circulation times of these waters. The formation time of the HCO3–Cl–Na–Mg waters does not exceed 50 years (3H = 4.3–11.1 ТЕ), while that of HCO3–Na water may reach more than 1000 years (3H = 0.5 ТЕ).

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Semi-dwarfs in the subspontaneous progeny and the synthesis of red oak dwarf cultivars

Glasnik Sumarskog fakulteta ◽

10.2298/gsf0490181s ◽

2004 ◽

pp. 181-190

Author(s):

Mirjana Sijacic-Nikolic ◽

Aleksandar Tucovic ◽

Dragica Vilotic

Keyword(s):

Related Species ◽

Juvenile Stage ◽

The Self ◽

Red Oak ◽

Genetic Nature ◽

Dwarf Cultivar ◽

Self Fertilization

The main data on the occurrence of semi-dwarfs in the subspontaneous progeny of American red oak were researched. The grafting of scions from semi-dwarf trees on the stock of related species shortens the juvenile stage, i.e. accelerates the flowering, induces the self-fertilization and potential crossing of related species. The specific undertaking requires to: (1) define the desired type of the dwarf cultivar, (2) develop the model, and (3) plan the genetic nature of the conceived cultivar. The development of cultivars relies on the conceived and long-term activity.

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Population-genetic nature of copy number variations in the human genome

Human Molecular Genetics ◽

10.1093/hmg/ddp541 ◽

2009 ◽

Vol 19 (5) ◽

pp. 761-773 ◽

Cited By ~ 30

Author(s):

Mamoru Kato ◽

Takahisa Kawaguchi ◽

Shumpei Ishikawa ◽

Takayoshi Umeda ◽

Reiichiro Nakamichi ◽

...

Keyword(s):

Human Genome ◽

Copy Number ◽

Population Genetic ◽

Copy Number Variations ◽

Genetic Nature

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ALAN H. GOODMAN, DEBORAH HEATH and M. SUSAN LINDEE (eds.), Genetic Nature/Culture: Anthropology and Science beyond the Two-Culture Divide. Berkeley, Los Angeles and London: University of California Press, 2003. Pp. xvii+311. ISBN 0-520-23793-5. £16.95, $24.95 (paperback).

The British Journal for the History of Science ◽

10.1017/s0007087405407530 ◽

2005 ◽

Vol 38 (4) ◽

pp. 495-496

Author(s):

JENNY MARIE

Keyword(s):

Los Angeles ◽

University Of California ◽

Genetic Nature

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Further Observations on the Genetic Nature of Gastric Cancer in Mice1

JNCI Journal of the National Cancer Institute ◽

10.1093/jnci/7.5.305 ◽

1947 ◽

Keyword(s):

Gastric Cancer ◽

Genetic Nature

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4. The Genetic Nature of Teosinte

Corn ◽

10.4159/harvard.9780674421707.c5 ◽

1974 ◽

pp. 37-52

Keyword(s):

Genetic Nature

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La voce nei gemelli monozigotici

Acta geneticae medicae et gemellologiae ◽

10.1017/s1120962300018576 ◽

1959 ◽

Vol 8 (4) ◽

pp. 381-394

Author(s):

L. Gedda ◽

L. Fiori Ratti ◽

G. Bruno

Keyword(s):

Fundamental Frequency ◽

General Trend ◽

Control Material ◽

Genetic Nature ◽

Functional Factors ◽

Related Individuals ◽

Mz Twins

SUMMARYThe Authors describe the methodology of an analytic electroacoustical study of the spoken voice of MZ twins of prepuberal age.The study was intended to reveal any possible analogies of the vocal spectrum and to ascertain the extent of the genetic conditioning of such analogies. For this purpose the Authors analyzed electroacustically a recorded material obtained as follows:a) during free conversation,b) by applying a laryngophone to the larynx in order to identify the fundamental laryngeal frequency,c) after introducing in both cotwins a critical variant by application to the ears of a deafening tone.Identical studies were carried out on a control material including DZ pairs and pairs of random-coupled non-related individuals very similar as to age and build.The results can be summed up as follows:1. The curves representing the vocal spectrum at the various frequency for each MZ pair reveal a marked similarity both in the general trend of the vocal curve and in the values at each point of the curve. The similarity is specially marked in the vicinity of the voice's fundamental frequency.2. The location of the fundamental laryngeal frequency in the majority of MZ pairs has been found to be very close, and in many cases even coincidental.3. Neither the analogies in the vocal spectrum nor the location of the fundamental frequency have been significantly modified by deafening.4. The control material (including DZ pairs and random-coupled pairs of individuals having different heredity but similar as to age and build) has revealed marked dissimilarities both in the curves of the vocal spectrum and in the location of the fundamental laryngeal frequency.On the basis of these results the Authors conclude that there is a similarity in the spoken voice of MZ pairs of prepuberal age they have examined, and this similarity is to be largely ascribed to morphological and functional factors of similarity of a genetic nature in the laryngeal generator.

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Notes on systematics and taxonomy for the Italian vascular flora. 2.

Natural History Sciences ◽

10.4081/nhs.2011.85 ◽

2011 ◽

Vol 152 (2) ◽

pp. 85 ◽

Cited By ~ 5

Author(s):

Enrico Banfi ◽

Gabriele Galasso ◽

Adriano Soldano

Keyword(s):

Plant Species ◽

Molecular Genetic ◽

New Combinations ◽

Vascular Flora ◽

Genetic Nature ◽

Italian Flora

The present study forms part of the series of systematic and taxonomic contributions related to plant species of the Italian flora, and also other phanerogams, in light of recent biosystematic works of a molecular-genetic nature. Caloscordum and Nectaroscordum are separated from Allium s.l., Holandrea is included within Dichoropetalum, Ficaria is separated from Ranunculus and Althaea sect. Hirsutae is included within Malva. Confirmation is given for the inclusion of Lavatera within Malva, of Aegilops within Triticum and for the separation of Phelipanche from Orobanche. In addition some observations regarding the genera Cytisus, Hippophaë, Portulaca, Rhaponticum, Senecio and Torilis are presented. Finally new combinations and/or new names are proposed within the genera Caloscordum, Nectaroscordum, Dichoropetalum, Ficaria, Hippophaë, Malva, Portulaca and Rhaponticum.

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