Careful sequence comparisons have shown that one cow gene for a ribonuclease enzyme was a pseudogene for much of its history but appears to have been reactivated during recent evolutionary time.
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美
- 在仔細比對序列之后，科學(xué)家發(fā)現牛的某個(gè)核糖核酸酶基因，在漫長(cháng)的演化中一直是個(gè)偽基因，直到最近才重新活化?？茖W(xué)家還發(fā)現，個(gè)體間的偽基因有些微的差異。
