在一些细胞中观察到界限清楚的中心体.Clearly defined centrosomes have been observed in some cells.每个 动物细胞 跟植物细胞不同,都有一对中心体.Every animal cell ( but not plant cells ) contains a pair of centrioles.目前的研究表明中心体异常在人类恶性肿瘤中普遍存在.Recent studies revea...
A wealthy businessman has been found bludgeoned to death.一位富商被发现死于重物连续猛击。He broke into the old man's house and bludgeoned him with a hammer.他闯进了老人的房子，用铁锤猛击老人。The boss finally bludgeoned him into accepting responsibi...
当两个等位基因不同时,称之为杂合性的.When the two alleles are not identical , they are said to be heterozygous.自交杂合子有一半杂合性, 因此远系繁殖可以产生适应能量更强的种群.Selfing heterozygotes halves the heterozygosity , and thus outbreeding maintains heterozygosit...