Diatomaceous earths are the skeletal remains of the tiny aquatic plants deposited centuries ago.
硅藻土是百年前水生植物沉淀下来的遗骸.
Instead of being junky molecular relics, introns could have progressively acquired genetic functions mediated by RNA.
插入子非但不是毫无用途的分子遗骸, 反而可能以rna为中介,逐步得到遗传上的功能.
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