Sentences with phrase «body axis»
The phrase "body axis" refers to an imaginary line that runs through the center of your body, from the top of your head to the bottom of your feet. It helps define your overall body posture and balance. Full definition
«It also allows Dickinsonia to be considered in debates surrounding the evolution and development of key animal traits such as bilateral symmetry, segmentation and the development of body axes, which will ultimately improve our knowledge of how the earliest animals made the transition from simple forms to the diverse range of body plans we see today.»
sciencedaily.com
The scientists applied their new technique to study how the vertebrate body axis is mechanically built.
The orientations of the grid correspond to up - down, right - left and front - back body axes laid down in the earliest stages of embryonic development, Wedeen says.
Denis Duboule and his colleagues at the European Molecular Biology Laboratory in Heidelberg, working with mice, showed that genes in the Hox - D cluster, which define the head - to - tail body axis, are activated one after another and at a precise time during development of the embryo.
The fertilized egg cell (zygote), which is the origin for plants, establishes the plant's body axis from its first cell division.
In multicellular organisms, symmetry breaking triggers the specification of embryonic body axes, providing general landmarks for subsequent morphogenetic programs.
The research lines of the Bakkers group include unraveling the genetics of normal cardiac development and body axis formation during development, investigating the molecular mechanisms of heart regeneration in the zebrafish and how this can be compared to heart injury in the mammals, and modeling of human (cardiac) disease in the zebrafish to unravel biological mechanisms behind the disease and to identify new drug targets.
Using embryos of zebrafish, which was selected for its rapid development and optical transparency, they could show that the mechanical properties of the tissue change along the body axis, facilitating the extension of the body at its posterior end.
Cells destined to form the neck region express only the first gene in the cluster, cells a little farther down the body axis express both the first and second genes, and so on until the tail end of the axis, where all nine genes are expressed.
While the Wnt signal path triggers the formation of the primary body axis of all animals, from sponges to vertebrates, the BMP signal pathway is also involved in the formation of the secondary body axis (back and abdomen) in advanced vertebrates.
«Our research results indicate that the origin of a central nervous system is closely linked to the evolution of the body axes,» explains Prof. Holstein.
Flowering plants form various organs, such as the flower, leaves, root and stem, which develops along its body axis.
«Although polarization and asymmetric cell division of zygotes to form the body axis is a common phenomena found in algae, mosses, and flowering plants, the origin of cell polarity and how asymmetric cell division occurs have remained a mystery up to now,» says Dr. Minako Ueda, a lecturer at ITbM, Nagoya University and a leader of this research.
«We were able to show by live cell imaging that polarization of the cell occurs after fertilization of the egg cell, and both MTs and F - actin play a role in inducing asymmetric cell division to form the plant's body axis,» says Ueda.
Through live cell imaging, the group was able to visualize how fertilized egg cells in plants undergo asymmetric cell division, which is responsible for determining the plant's body axis.
Homeotic, or Hox genes specify the identity of segments along the embryo's body axis and regulate the formation of major structures in every animal studied.
In the large Drosophila melanogaster oocyte, asymmetrically localised cell fate determinants specify the body axes and pattern the future embryo and fly, making it an ideal model for the study of RNA localisation.