然而,利用分子钟方法所得出的不同门类起源时间总是早于化石记录,因此分子钟与化石记录的矛盾仍十分突出。
Knowing that all four strains were at least 10,000 years old, scientists recalculated the virus's 'molecular clock,' measuring how fast it mutates.知道了这四个种族已经有至少一万年历史,科学家重新计算了病毒的“分子钟”,测量病毒的变异速度。
Knowing that all four strains were at least 10, 000 years old, scientists recalculated the virus's 'molecular clock,' measuring how fast it mutates.知道了这四个种族已经有至少一万年历史,科学家重新计算了病毒的“分子钟”,测量病毒的变异速度。