Answer:
In all organisms, the instructions for specifying the characteristics of the organism are carried in DNA, a large polymer formed from subunits of four kinds (A, G, C, and T). ...
Most of the cells in a human contain two copies of each of 22 different chromosomes. ...
Changes in DNA (mutations) occur spontaneously at low rates.
Answer: Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
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Answer: Certain proteins
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Answer:
Les ruminants sont dotés d'un estomac puissant qui se compose de 4 poches : la panse, le bonnet, le feuillet et la caillette. Chacune joue un rôle bien précis dans la rumination
Answer:
Explanation:
The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element
