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These include the prominent "Hadley cells" centered over the tropics and the weaker "Ferrell cells" centered over the mid-latitudes. [3] The Hadley cells result from the contrast of insolation between the warm equatorial regions and the cooler subtropical regions. The uneven heating of Earth's surface results in regions of rising and descending ...
Atmospheric circulation diagram, showing the Hadley cell, the Ferrel cell, the Polar cell, and the various upwelling and subsidence zones between them. In meteorology, the polar front is the weather front boundary between the polar cell and the Ferrel cell around the 60° latitude, near the polar regions, in both hemispheres.
Meiosis is a specialized form of cell division that generates haploid germ cells from diploid progenitor cells. During the early meiosis stage of pachynema in spermatocytes a male specific MAPS protein is expressed that is essential for pachynema progression. [ 2 ]
William Ferrel (January 29, 1817 – September 18, 1891) was an American meteorologist who developed theories that explained the mid-latitude atmospheric circulation cell in detail, and it is after him that the Ferrel cell is named.
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First, procentrioles begin to form near each preexisting centriole as the cell moves from the G1 phase to the S phase. [6] [7] [8] During S and G2 phases of the cell cycle, the procentrioles elongate until they reach the length of the older mother and daughter centrioles. At this point, the daughter centriole which takes on characteristics of a ...
In this sense, a gap junction plaque forms a one-to-one relationship with the neighboring cell, daisy chaining many cells together. Hemichannels form a one to many relationship with the surrounding tissue. On a larger scale, the one-to-many communication of cells is typically carried out by the vascular and nervous systems.