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While Lamb's analysis assumed a straight wavefront, it has been shown [8] that the same characteristic equations apply to cylindrical plate waves (i.e. waves propagating outwards from a line source, the line lying perpendicular to the plate). The difference is that whereas the "carrier" for the straight wavefront is a sinusoid, the "carrier ...
A cross-bred ewe suckles her lamb, which was the first of the 2008 spring lambing at a farm in Coventry, England Domesticated sheep are herd animals that are bred for agricultural trade. A flock of sheep is mated by a single ram , which has either been chosen by a farmer or, in feral populations, has established dominance through physical ...
Poddy lamb, bottle lamb or pet lamb – an orphan lamb reared on a bottle. Also cade lamb, or placer. Rubbed wool indicating the presence of external parasites on sheep. Pour-on – see backliner. Raddle – coloured pigment used to mark sheep for various reasons, such as to show ownership, or to show which lambs belong to which ewe. May be ...
The exact line of descent from wild ancestors to domestic sheep is unclear. [2] The most common hypothesis states that Ovis aries is descended from the Asiatic (O. gmelini) species of mouflon; the European mouflon (Ovis aries musimon) is a direct descendant of this population. [3]
Plant propagation is the process by which new plants grow from various sources, including seeds, cuttings, and other plant parts. Plant propagation can refer to both man-made and natural processes. Plant propagation can refer to both man-made and natural processes.
The mode of reproduction of a crop determines its genetic composition, which, in turn, is the deciding factor to develop suitable breeding and selection methods. Knowledge of mode of reproduction is also essential for its artificial manipulation to breed improved types.
The technique of plant tissue culture, i.e., culturing plant cells or tissues in artificial medium supplemented with required nutrients, has many applications in efficient clonal propagation (true to the type or similar) which may be difficult via conventional breeding methods.
Propagating rifts are formed as a result of a change in plate motions, [8] incremental jumps of the tip of a spreading center across a transform fault or, in most cases, from the migration of overlapping spreading centers (OSCs) along the crest of a mid-ocean ridge. [10] The mechanism for propagation has been attributed to a few different ...