Although aspects of the findings contradict known behavioural and physiological work, the use of molecular genetic techniques is a new step in understanding how the facial pits work.
虽然这个发现的一些方面与已知的行为学和生理学工作相悖，分子基因技术的应用是了解颊窝如何工作的进步。
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All are RNA viruses, which means they can't easily convert their genetic material into DNA, a necessary step for integrating into an animal's genome.