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A multiple origin soft sweep happens when mutations are common, for example in a large population, so that the same or similar beneficial mutations occur on a different genomic background such that no single genomic background can hitchhike the high frequency. [2] Whether the selective sweep has occurred can be explored in various ways.
This is a diagram of a soft selective sweep from standing genetic variation. It shows the different steps (a neutral mutation becomes beneficial, increases in frequency and fixes in a population) and the effect on nearby genetic variation. This is a diagram of a multiple origin soft selective sweep from recurrent mutation. It shows the ...
Diagram of an off-tackle play. An off-tackle run in American football is a play in which the running back carries the ball through a running lane off of the tackle's block. The lead block kicks out the end man on the line of scrimmage, and another offensive player usually blocks the linebacker.
Also gastrocoel. The central internal cavity of the gastrula in most animal embryos, fated to develop into the lumen of the digestive tube ; the primitive gut. The archenteron initially has only one open end, known as the blastopore. B birth blastocoel Also blastocoele, blastocele, cleavage cavity, and segmentation cavity. The fluid-filled or yolk -filled cavity that forms in the developing ...
Toss sweep Buck sweep Flanker sweep Quarterback sweep. A sweep is an outside running play in American football where a running back takes a pitch or handoff from the quarterback and starts running parallel to the line of scrimmage, allowing for the offensive linemen and fullback to get in front of him to block defenders before he turns upfield.
In behavioral psychology, reinforcement refers to consequences that increase the likelihood of an organism's future behavior, typically in the presence of a particular antecedent stimulus. [1] For example, a rat can be trained to push a lever to receive food whenever a light is turned on; in this example, the light is the antecedent stimulus ...
Sweep (motorcycle), in group motorcycle riding, the last rider in line; Sweep (software), a digital audio editor; Sweep, a gradual bend or elbow, in conduit, ductwork, piping, or other tubing; Well sweep, an irrigation tool; Sweep account, a kind of bank account; Sweep line algorithm, a concept in computational geometry
Agonistic behaviour is a result of evolution, [5] and this can be studied in a number of species facing different environmental pressures. Though agonistic behaviours can be directly observed and studied in a laboratory setting, it is also important to understand these behaviours in a natural setting to fully comprehend how they have evolved and therefore differ under different selective ...