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Jet001 [13]
4 years ago
7

Nitrogen bases have two rings structure are called

Biology
1 answer:
djverab [1.8K]4 years ago
4 0
Purines: adenine and guanine
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Thorax. On the thorax, all cockroaches have three pairs of legs. Adults of most of the domestic species have two pairs of wings, although one species, the oriental cockroach, has poorly- developed wings in both sexes.

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