Results 1 to 10 of about 28,873 (283)

Floral symmetry affects bumblebee approach consistency in artificial flowers

open access: yesJournal of Pollination Ecology, 2016
Bilateral symmetry has evolved from radial symmetry in several floral lineages, and multiple hypotheses have been proposed to account for the success of this floral plan.
Brett Matthew Culbert, Jessica Forrest
doaj   +1 more source

Tree Size Influences Leaf Shape but Does Not Affect the Proportional Relationship Between Leaf Area and the Product of Length and Width

open access: yesFrontiers in Plant Science, 2022
The Montgomery equation predicts leaf area as the product of leaf length and width multiplied by a correction factor. It has been demonstrated to apply to a variety of leaf shapes.
Jianzhong Ma   +6 more
doaj   +1 more source

Radial or Bilateral? The Molecular Basis of Floral Symmetry [PDF]

open access: yesGenes, 2020
In the plant kingdom, the flower is one of the most relevant evolutionary novelties. Floral symmetry has evolved multiple times from the ancestral condition of radial to bilateral symmetry. During evolution, several transcription factors have been recruited by the different developmental pathways in relation to the increase of plant complexity. The MYB
Francesca Lucibelli   +2 more
openaire   +3 more sources

A Step-by-Step Guide for Geometric Morphometrics of Floral Symmetry

open access: yesFrontiers in Plant Science, 2018
This paper provides a step-by-step guide for the morphological analysis of corolla and the decomposition of corolla shape variation into its symmetric and asymmetric components.
Yoland Savriama
doaj   +1 more source

Evaluation of roots and root canals’ morphology of maxillary premolars in a Syrian subpopulation using cone-beam computed tomography

open access: yesSaudi Endodontic Journal, 2023
Introduction: The morphology of the roots is variable and complex; hence, a better understanding of the root canal systems is important to provide optimal endodontic treatment. The aim of this study was to investigate the number of roots, and root canals’
Safa Allawi   +2 more
doaj   +1 more source

A Retrospective Study of Roots and Root Canal Morphology in Mandibular Premolars using Cone Beam Computed Tomography in Delhi-NCR [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2021
Introduction: The anatomical heterogeneity of mandibular premolars has always been considered an enigma and it makes them potentially prone to high rates of endodontic failure.
SNEH MISHRA   +3 more
doaj   +1 more source

A Study of Bilateral Symmetry in Color Fundus Photographs [PDF]

open access: yesIEEE Access, 2021
We have previously shown that there is a high degree of bilateral similarity in the central retinal blood vessels (CRBVs), which are responsible for supplying blood to retinas and can be used as a strong biometric. We have also shown that a side-independent retina verification system can be developed based on the bilateral similarity in CRBVs.
Sangeeta Biswas   +3 more
openaire   +2 more sources

Concussion Disrupts Normal Brain White Matter Microstructural Symmetry

open access: yesFrontiers in Neurology, 2020
Injuries and illnesses can alter the normal bilateral symmetry of the brain, and determining the extent of this disruption may be useful in characterizing the pathology.
Jun Maruta   +10 more
doaj   +1 more source

Bilateral Symmetry in Morphogenesis of Embryos [PDF]

open access: yesProceedings of the National Academy of Sciences, 1970
It is suggested that differentiated embryonic cells have a high specificity of molecular constitution as regards the surface layers surrounding their cellular membranes. Correspondingly, specific interface energies may characterize the early contacts between different cell types.
openaire   +2 more sources

Shape and position of the node and notochord along the bilateral plane of symmetry are regulated by cell–extracellular matrix interactions

open access: yesBiology Open, 2014
The node and notochord (and their equivalents in other species) are essential signaling centers, positioned along the plane of bilateral symmetry in developing vertebrate embryos. However, genes and mechanisms regulating morphogenesis of these structures
Maria Pulina, Dong Liang, Sophie Astrof
doaj   +1 more source

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