Chromosomes also determine the sex of animals.染色体也决定动物的性别.Each of four chromosomes divide longitudinally.四种染色体的每一种都沿着纵向分裂.At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes a...
She did not take into account how much liberty she was securing.她并不考虑自己已获得了多少自由.Longfellow was lucky in securing a professorship of modern languages at Harvard.朗费罗能够在哈佛大学当上现代语言教授是出于幸运.Victor's finest achievement for...