| 词条 | Arm folding | ||||||||||||||||||||||||||||||||||||||||
| 释义 |
The manner in which a person folds arms is one of the clearest dynamic morphological characteristics by which each person can be assigned to one of two alternative phenotypes. Once adopted, manner of arms folding across the chest does not change throughout the lifetime and persons easily give up the unusual folding position, most commonly at the first attempt. It has been shown that the phenotypes of these properties are distributed independently with left-handed and right-handed people. If, after arms folding, the right arm is above the left forearm, the phenotype is characterised as R (right; the right type), and in the opposite case, i.e. if the left arm is positioned above the right, it is the phenotype L (left; left-type).[1][2][3][4] Factors and historyFalk and Ayala (1971) in their research found that these variants are largely inherited, although their genetic make up cannot be attributed the existing Mendelian models. [1] In this regard, Ferronato et al. (1974) found no significant correlation between parents and children. Individual type of arms folding is slightly less studied than the manner of clasping hands. In search of the main factors that determine this dimorphism, the same difficulties emerge as with clasping hands. However, utilising the findings and the views of many authors,[5][6][7][8][9][10] it can be concluded that the manner of arms folding is hereditary and that it inherits the model that does not fit into the genetics concept of simple Mendelian characters, although in this respect there are contradictory findings. The main conclusion is that the manifestation of alternative phenotypes with these characteristics is irrespective of sex and age, and that it is not related to handedness. Supporters of the assumptions that genetic factors play an important role in forming these properties, are reinforced by the data of a very heterogeneous frequencies of alternative phenotypes (R and L) in the explored portion of the world's population. But the point of view that basic genetics could explain the phenomena has also been put in discussion. It is not accepted by all researchers [11]. Luria (1947/1970) proposed left-top positions in arm folding (AF) and hand clasping (HC) to be signs of "latent left-handedness". The human being is more right-handed as animals. It is supposed that left-handedness could be latent. Experiments support Luria's proposition that a left-top preference in Arm Folding points to "latent" left-handedness, but only if associated with a right-top preference in Hand Clasping.[12] Phenotype R distributionThe data in the following table summarize R distributions in various areas as concluded by the cited studies.
See also
References1. ^{{cite journal |doi=10.1159/000152670 |pmid=4461659 |title=Preferences for Handedness, Arm Folding, and Hand Clasping in Families |journal=Human Heredity |volume=24 |issue=4 |pages=345–351 |year=1974 |last1=Ferronato |first1=S. |last2=Thomas |first2=D. |last3=Sadava |first3=D. }} 2. ^{{cite journal |doi=10.1159/000152670 |pmid=4461659 |title=Preferences for Handedness, Arm Folding, and Hand Clasping in Families |journal=Human Heredity |volume=24 |issue=4 |pages=345–351 |year=1974 |last1=Ferronato |first1=S. |last2=Thomas |first2=D. |last3=Sadava |first3=D. }} 3. ^OMIM, Victor A. McKusick : 6/4/1986. 4. ^{{cite journal |last1=Hadžiselimović |first1=R. |last2=Berberović |first2=Lj |last3=Sofradžija |first3=A |year=1979 |title=Distribucija fenotipova načina sklapanja šaka i prekrštanja ruku u stanovništvu Bosne i Hercegovine |trans-title=Distribution of phenotypes of the way handcuffs and hands crossing in the population of Bosnia and Herzegovina |language=Croatian |journal=God.Biol. inst. Univ. u Sarajevu |volume=32 |pages=101–16 }} 5. ^{{cite journal |doi=10.1086/280443 |title=Observations on the Manner of Clasping the Hands and Folding the Arms |journal=The American Naturalist |volume=66 |issue=705 |pages=365–370 |year=1932 |last1=Wiener |first1=Alexander S. }} 6. ^{{cite journal |pmid=14489425 |year=1961 |last1=Quelce-Salgado |first1=A |title=Arm folding: A genetic trait? |journal=Jinrui Idengaku Zasshi. The Japanese Journal of Human Genetics |volume=6 |pages=21–5 |last2=Freire-Maia |first2=Ademar |last3=Freire-Maia |first3=Newton }} 7. ^1 {{cite journal |last1=Pons |first1=J |year=1963 |title=A contribution to the genetics of hand clasping and arm folding |journal=Proc. Second Intern. Congr. Hum. Genet. (Roma) |volume=1 |pages=442–6 }} 8. ^{{cite journal |last1=Kawabe |first1=M |year=1949 |title=A study of the mode of clasping of the hands |journal=Trans. Sapporo Nat. Hist. Soc. |volume=18 |pages=49–52 }} 9. ^{{cite journal |pmid=5977525 |jstor=41449259 |year=1966 |last1=Freire-Maia |first1=A. |title=Hand clasping and arm folding among African Negroes |journal=Human Biology |volume=38 |issue=3 |pages=175–9 |last2=De Almeida |first2=J. }} 10. ^{{cite journal |last1=Leguebe |first1=A |last2=Martines-Fuentes |first2=A |year=1968 |title=Analyse génétique de deux caractères anthropologiques (Hand clasping and Arm folding) |trans-title=Genetic analysis of two anthropological characters (Hand clasping and Arm folding) |language=French |journal=Tudi VII Meždunarodnogo kongresa antropologičeskih i etnografičeskih nauk |volume=1 |pages=360–8 |oclc=1041385729 }} 11. ^{{Cite web | url=https://udel.edu/~mcdonald/mytharmfold.html | title=Myths of Human Genetics: Arm Folding}} 12. ^{{cite journal |doi=10.1080/13576500500199795 |pmid=16414912 |title=Arm folding, hand clasping, and Luria's concept of "latent left-handedness" |journal=Laterality: Asymmetries of Body, Brain and Cognition |volume=11 |issue=1 |pages=15–32 |year=2006 |last1=Mohr |first1=Christine |last2=Thut |first2=Gregor |last3=Landis |first3=Theodor |last4=Brugger |first4=Peter }} 13. ^{{cite journal |last1=Leguebe |year=1967 |title=Hand clasping: étude anthropologique et génétique |trans-title=Hand clasping: anthropological and genetic study |language=French |journal=Bull. Soc. Roy. Antrop. Préhist |volume=78 |pages=81-107 }} 14. ^Hadžiselimović R., Berberović Lj., Sofradžija A. (1979): Distribucija fenotipova načina sklapanja šaka i prekrštanja ruku u stanovništvu Bosne i Hercegovine. God.Biol. inst. Univ. u Sarajevu, 32: 101-116. 15. ^Ludwig W. (1932): Das Rechts – Links Problem im Tierreich und bei Menschen. J Springer Verlag. 16. ^Pelecanos 1969, in: Pyżuk M. (1976): Hand clasping, and arm- and leg-folding in Polish rural population. Acta F. R. N. Univ Come., Anthropologia, 23: 219-223. 17. ^Wolanski et al 1973, in: Pyżuk M. (1976): Hand clasping, and arm- and leg-folding in Polish rural population. Acta F. R. N. Univ Come., Anthropologia, 23: 219-223. 18. ^Hadžiselimović R., Berberović Lj., Sofradžija A. (1979): Distribucija fenotipova načina sklapanja šaka i prekrštanja ruku u stanovništvu Bosne i Hercegovine. God.Biol. inst. Univ. u Sarajevu, 32: 101-116. 19. ^Gavrilović Ž., Božić V. (1972): Proučavanje načina sklapanja šaka i pekrštanja ruku kod stanovništva u Vojvodini. Genetika, 4 (1): 59-61. 20. ^{{cite journal |pmid=13866425 |jstor=41448543 |year=1962 |author1=BECKMAN L |title=Data on bilateral variation in man: Handedness, hand clasping and arm folding in Swedes |journal=Human Biology |volume=34 |issue=2 |pages=99–103 |author2=ELSTON R }} External links{{commonscat}}
4 : Arm|Gestures|Human population genetics|Classical genetics |
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