Results 251 to 260 of about 57,572 (278)
Some of the next articles are maybe not open access.
Skull asymmetry in various sheep breeds: Directional asymmetry and fluctuating asymmetry
Anatomia, Histologia, EmbryologiaAbstractSheep (Ovis aries) play an important role in the economy of Turkey and the Balkan Peninsula due to their use in farming. As a domesticated species, sheep's morphometric and morphological diversity is likely determined by selective breeding practices rather than geographic distribution.
Nicoleta Manuta +6 more
openaire +2 more sources
Fluctuating asymmetry and the human brain
Laterality: Asymmetries of Body, Brain and Cognition, 2002Adaptive development requires the organism to resist genetic and environmental stresses that disrupt the genetic plan for growth, a buffering capacity termed developmental stability. Developmental instability is revealed by fluctuating asymmetry (FA), which has been demonstrated in many species to reflect phenotypic and genetic quality.
Robert J, Thoma +4 more
openaire +2 more sources
Fluctuating asymmetry and intelligence
Intelligence, 2007The general factor of mental ability (g) may reflect general biological fitness. If so, g-loaded measures such as Raven's progressive matrices should be related to morphological measures of fitness such as fluctuating asymmetry (FA: left–right asymmetry of a set of typically left–right symmetrical body traits such as finger lengths). This prediction of
openaire +1 more source
Season of birth and fluctuating asymmetry
American Journal of Human Biology, 2004AbstractFluctuating asymmetry (FA) refers to random, small deviations from perfect bilateral symmetry in morphological traits. These minor deviations from the ideal phenotype reflect environmental and genetic perturbations experienced during ontogeny. FA has been associated with negative health outcomes and many developmental disorders in humans.
Zeynep, Benderlioglu, Randy J, Nelson
openaire +2 more sources
Fluctuating Asymmetry Analyses Revisited
2003Abstract Fluctuating asymmetries are small, random deviations from symmetry of bilaterally symmetrical traits (Ludwig 1932). They presumably reflect the residual variation after all the direct effects of genotype and environment on trait form have been removed (Mather 1953). As a consequence, the average unsigned deviation from symmetry,
Richard Palme, Curtis Strobeck
openaire +1 more source
FLUCTUATING ASYMMETRY: Measurement, Analysis, Patterns
Annual Review of Ecology and Systematics, 1986With these words Darwin opened a brief paragraph citing observations antithetical to his supposition: anecdotal reports of the inheritance of characters missing from one side of the body. His initial hunch, however, has stood the test of time: Genetic studies have confirmed that where only small, random deviations from bilateral symmetry exist, the ...
A R Palmer, C Strobeck
openaire +2 more sources
Fluctuating dental asymmetry and measurement error
American Journal of Physical Anthropology, 1984AbstractDifferences between the dimensions of left and right molar teeth are analyzed in the context of measurement error while considering the power of the F‐Ratio. Molar teeth from two Nubian cemeteries, 24‐S‐46 and 21‐R‐2, excavated at Kulubnarti, Sudan, were initially measured, and then remeasured to obtain data for assessing fluctuating dental ...
openaire +2 more sources
Fluctuating asymmetry and sexual selection
Genetica, 1993Fluctuating asymmetry occurs when an individual is unable to undergo identical development on both sides of a bilaterally symmetrical trait. Fluctuating asymmetry measures the sensitivity of development to a wide array of genetic and environmental stresses.
A. P. Møller, A. Pomiankowski
openaire +1 more source
Fluctuating dental asymmetry in Down's syndrome
Australian Dental Journal, 1983Abstract— Fluctuating dental asymmetry in mesiodistal and buccolingual dimensions of both deciduous and permanent teeth was compared between a relatively large sample of individuals with Down's syndrome and normal controls. Asymmetry was increased in both dentitions of individuals with Down's syndrome supporting the concept of a generalized increase in
openaire +2 more sources
Fluctuating asymmetries, competition and dominance
Proceedings of the Royal Society of London. Series B: Biological Sciences, 1994Levels of fluctuating asymmetry (FA) in the primary feathers of European starlings, Sturnus vulgaris, have been shown to be sensitive to nutritional and energetic stress. Furthermore, between-individual variation in plumage FA has been found to be related to social dominance, even without social interactions during feather growth, with dominant birds ...
openaire +1 more source