染色体也决定动物的性别.Chromosomes also determine the sex of animals.四种染色体的每一种都沿着纵向分裂.Each of four chromosomes divide longitudinally.利用显微镜检查细胞染色体可以发现胎儿的性别。Microscopic examination of a cell's chromo-somes can reveal the sex of ...
Phylogenetic trees show that there are 64 MADS - box genes encoding different proteins, including 46 cDNA sequences.结果表明,水稻中有64个MADS-box基因编码不同氨基酸, 其中已知cDNA序列的为43个.Several MADS - box genes related to the development of th...