Because the marks of evolution are literally all over our chromosome.(因为进化的标志印遍了我们的染色体。)
The Chromosome is now losing important genetic information and is no longer functional.(染色体现在缺少重要的遗传信息，不再具有功能。)
The results suggested that obvious difference of chromosome number appeared among theseAlnus species.(本次研究结果表明桤木属物种间染色体数目有明显的差异。)
Chromosome 1 is the largest and chromosome 22 the smallest.(1号染色体最大，22号染色体最小。)
Challenge: a mutation on the X chromosome is the most common known cause of autism.(挑战：X染色体上的突变是最常见的自闭症病因。)
It is called human chromosome number two.(它就是人类第2号染色体。)
In a few cases, women may have two distinct green cones on either X chromosome.(在少数情况下，妇女也可能有两个X染色体上不同的绿色视锥。)
If the Y chromosome is detected, the fetus is male.(如果检测到Y染色体，则胎儿是个男性。)
They suggest that genes on the X chromosome play a role in autism.(他们说x染色体的基因在自闭症中起着作用。)
Most cells in your body have two copies of every chromosome and, therefore, two copies of every gene: one from your mother and one from your father.(你体内的大多数细胞每条染色体都有两份拷贝，因此，每个基因也都有两份拷贝：一份来自你的母亲，一份来自你的父亲。)
