Although all cells have the same DNA only some parts of it are turned on depending on what the cell needs to do, so each cell turns on different parts of itself depending on what its job is.
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Answer:
In sexually reproducing organisms, the number of chromosomes in the body (somatic) cells typically is diploid (2n; a pair of each chromosome), twice the haploid (1n) number found in the sex cells, or gametes. The haploid number is produced during meiosis.
Polar covalent bonds.
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