Both dna and rna have four nitrogenous bases each three of which they share (cytosine adenine and guanine )
The original source of phosphorus in a terrestrial ecosystem is soil microorganisms. soil becomes deficient in phosphorous leading to ecosystem retrogression. phosphorous can be found in our body, it builds strong bones and teeth.
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<span>Karotypes are best prepared using cells that have been arrested in metaphase. In metaphase or prometaphase, the chromosomes are most condensed.</span>
