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axis in Biological Dictionary

Longitudinal axis

... (Redirected from Longitudinal axis ) Jump to: navigation, search ... This ... bank rotation around the longitudinal axis . ... The longitudinal axis passes through the plane from nose to tail. ... ...

Aboral

... noun ōs, ōris n., meaning mouth. ... the main axis is oral to aboral (from the mouth to the ... the systematics, behavior, ... The aboral -oral axis runs through the center of the disk perpendicular ... online encyclopedia article on oral- aboral axis (anatomy), ... is termed the oral, or ...

Tripartite

... the following: The Tripartite Pact, also called the Three-Power Pact, axis Pact, Three-way Pact or Tripartite Treaty was a pact signed in Berlin, Germany on September 27, 1940, which established the axis Powers of World War II. The pact ... Definition of tripartite from ...

Radial symmetry

... has the general form of a short or long cylinder or bowl, with a central axis from which the body parts radiate or along which they are arranged in ... in the ... radial asymmetry - the absence of symmetry about an axis ... Radial versus bilateral symmetry . Animals can be either ...

Transition

... (roadable aircraft), made by Terrafugia. The University ... The Transition , the failed military experiment in John Birmingham's trilogy axis ... A transition tag is a tool used by National Football League teams to retain unrestricted free agents. It guarantees the original club the ...

Supercoil

... In a "relaxed" double-helical segment of DNA, the two strands twist around the helical axis once every 10.4-10.5 base pairs of sequence. Adding or subtracting twists, as some enzymes can do, imposes strain. If a DNA ... ...

Stem

... tissue and that ... Stem (bicycle part), connects the handlebars to the steer tube of a bicycle fork ... stem n. The main ascending axis of a plant; a stalk or trunk. ... If a stem creeps along the ground, rooting at the nodes, it is said to be repent ... Stem (bicycle part) ...

Root cap

... soil. This is not always the case, however, since a root can also be aerial or aerating . Furthermore, a stem ... Young root tip: axis of the plant which grows in the opposite direction from the stem, maintain the ... Root cap : envelope that protects the young root . Enter ... ...

Relaxed DNA

... In a " relaxed " double-helical segment of DNA , the two strands twist around the helical axis once every 10.4-10.5 base pairs of sequence. Adding or subtracting twists, as some enzymes can do, imposes strain. If a DNA ... ... ...

Polyp

... found in many species of cnidarians. The two are the polyp or hydroid and the medusa. Polyps are approximately cylindrical, elongated on the axis of the body. The ... A polyp is an abnormal growth of tissue projecting from a mucous membrane. If it is attached to the surface by a ...

Pericycle

... pericycle tissue ... Lateral roots initiate from internal cells of the pericycle . ... A small group of pericycle cells reorient their axis of polarity to the radial ... A. epidermis B. cortex C. endodermis D. pericycle ... D. pericycle * Which of the following plants has a ...

Notochord

... is a flexible, rod-shaped body found in embryos of all chordates. It is composed of cells derived from the mesoderm and defines the primitive axis of the embryo. In some vertebrates and chordates, it persists throughout life as the main axial support ... notochord ( ) n. A flexible ...

Homologous recombination

... homologous recombination by growing stem cells in neomycin ... Prior to meiotic division, homologous chromosomes unite at the cell axis before ... and many genes involved in homologous recombination (HR) appear conserved ... Recombinomics Commentary ... paper, with the unlikely ...

Cotyledons

... up to 3 mm wide (Figure 1). Each cotyledon consists of two widely divergent, somewhat linear, tapering lobes. ... The embryo consists of an axis bearing the cotyledons (fig. ... The two cotyledons thus formed are opposite to ... Cotyledons are usually entire and sessile. ... of ...

Caudal

... The axis between cranial and caudal is the Cr-Cd axis, and between the dorsal ... In any tetrapod, the shoulders are cranial to the belly, but caudal ...
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