Search Results - (Author, Cooperation:D. Falk)
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1E. Callaway ; T. Sutikna ; R. Roberts ; W. Saptomo ; P. Brown ; H. Gee ; L. Dayton ; B. Jungers ; M. Henneberg ; D. Falk ; R. Martin ; L. Aiello
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-10-25Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; *Biological Evolution ; Caves ; Expeditions ; Female ; *Fossils ; Hominidae/*anatomy & histology/*classification ; Humans ; Indonesia ; Islands ; Microcephaly ; Skeleton ; Skull/anatomy & histology/pathology ; Species SpecificityPublished by: -
2Staff View
ISSN: 0377-8401Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionType of Medium: Electronic ResourceURL: -
3Staff View
ISSN: 0047-2484Keywords: brain ; ceboid ; cladistic analysis ; endocast ; sulcal patternSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
4Staff View
ISSN: 0047-2484Keywords: australopithecine ; brain size ; cranial capacitySource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
5Staff View
ISSN: 0047-2484Keywords: australopithecine ; brain size ; cranial capacitySource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
6Konigsberg, L. ; Falk, D. ; Hildebolt, C. ; Vannier, M. ; Cheverud, J. ; Helmkamp, R.C.
Amsterdam : ElsevierStaff ViewISSN: 0047-2484Keywords: allometry ; brain sulci ; growth ; rhesus macaqueSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
7Staff View
ISSN: 0047-2484Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
8Staff View
ISSN: 1432-2242Keywords: Crossability ; Wheat ; Rye ; Hordeum bulbosumSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary Crosses of wheat (Triticum aestivum L.) Group 5 chromosome substitution lines from three different cultivar backgrounds indicate that there may be multiple alleles for reduced crossability with rye (Secale cereale L.) and H. bulbosum on both 5A and 5B chromosomes. No reduction in seed set was observed from any of the 5D substitution lines. It was found that the Kr1 locus on chromosome 5B had a more pronounced affect on both rye and H. bulbosum crossability than the Kr2 locus on chromosome 5A and that the effects of both loci were cumulative. The Kr alleles affected both rye and H. bulbosum crossability in a linear, or additive, fashion. The Kr 2 allele was shown to have little effect on H. bulbosum crossability compared to a significant effect on rye crossability. Tests with tetrasomic and nulli-tetrasomic lines of ‘Chinese Spring’ indicated that the kr allele is ‘null’ or inactive in promoting crossability while the Kr allele is active in reducing crossability to both rye and H. bulbosum. Thus, extra doses of the kr allele do not increase rye or H. bulbosum crossability in the presence of the corresponding Kr allele.Type of Medium: Electronic ResourceURL: -
9Staff View
ISSN: 1617-4623Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary Eleven reduced-winged and nine normal-winged pyrimidine requiring mutants of Drosophila melanogaster are characterised. All map close to the rudimentary locus (54.5, chromosome 1). On the basis of complementation studies with wing abnormalities, all the reduced-winged mutants prove to be rudimentary alleles. All twenty mutants are partially dominant as auxotrophs; the validity of complementation tests to establish their allelic nature with respect to the auxotrophic phenotype is, therefore, somewhat questionable. However, complementation tests using low-level pyrimidine nucleoside supplementation indicate that at least seven of the normal-winged mutants are rudimentary isoalleles. It is suggested that wild-type pyrimidine synthetic capacity is only just sufficient to support Drosophila melanogaster development and that mutants at the rudimentary locus (which appears to control early steps in pyrimidine biosynthesis, Norby, 1973) reduce pyrimidine biosynthesis, so that dependence upon exogenous pyrimidine sources is discernable, even when the reduction of synthetic capacity is relatively slight. This hypersensitivity of development to pyrimidine levels is, it is suggested, the origin of the high frequency of recovery of mutants at the locus (Fahmy and Fahmy, 1959), the extreme variation of expression of wing defects found amongst the auxotrophs and of the dominance of the auxotrophic phenotype.Type of Medium: Electronic ResourceURL: -
10Staff View
ISSN: 1824-310XKeywords: Australopithecine ; brain evolution ; cerebellum ; endocast ; Frankfurt HorizontalSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The question of how an endocast (or brain) is oriented within a skull that is positioned in the Frankfurt plane is investigated for African great apes, early hominids STS 71, KNM-ER 1813 and KNM-ER 1470, and modern humans using a 3SPACE digitizer. Our results suggest that, rather than being positioned in the orientation in which isolated brains (endocasts) are conventionally illustrated, brains within skulls that are oriented in the Frankfurt plane tend to be inclined so that the frontal pole is higher than the occipital pole, especially inHomo. These preliminary findings have implications for interpreting early hominid endocasts such as that of AL 162-28.Type of Medium: Electronic ResourceURL: