An unusual patch of sky devoid of galaxies could hint at the existence of more than one type of dark matter, scientists say.
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Mammals are diphyodont, meaning that they develop two sets of teeth. In humans, the first set (also called the "baby", "mil... -
A cell in late metaphase. All chromosomes (blue) but one have arrived at the metaphase plate. -
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Many processes designed to preserve food will involve a number of food preservation methods. Preserving fruit, by turning it into jam, for ... -
As the retinal component of rhodopsin is derived from vitamin A, a deficiency of vitamin A causes a deficit in the pigment needed by rod ce... -
A chart showing three types of selection. 1. Disruptive selection 2. Stabilizing selection 3. Directional selection -
DNA structure. Bases are in the centre, surrounded by phosphate–sugar chains in a double helix.
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