Microscopic examination of a cell's chromosomes can reveal the sex of the fetus.
用显微镜检查细胞染色体可以查出胎儿的性别。
These lines represent broken chromosomes.
这些线代表损坏的染色体。
Two X chromosomes and a blue uniform may not be enough.
而两条X染色体和一套蓝色制服未必就足够了。
I was born with XY chromosomes, the combination found in boys.
我生下来的时候，染色体为XY，男孩子的染色体才是XY组合。
Chromosomes carry the genes that make each of us different.
染色体携带可以区分每个人的基因。
The number and size of chromosomes varies from species to species.
染色体的数量和长度随物种而不同。
The number of chromosomes in the root tip cells was observed.
对主栽品种的根尖细胞染色体数进行了观察；
Each species has a different number of chromosomes in their nuclei.
不同的物种在细胞核中有不同的染色体数量。
Is it possible that a pair of chromosomes just got lost in our lineage?
可不可能这对染色体只是在我们人类的族系中丢失的呢？
One pair of chromosomes determines whether the person is male or female.
其中一对染色体决定了此人的性别。
The chromosomes of two species of Melica from Shandong were studied.
对山东两种臭草进行了染色体研究。
A polyploid is a plant with more than two complete sets of chromosomes.
多倍体是具有两套以上染色体的植物。
A polyploid is a plant with more than two complete sets of chromosomes.
多倍体是植物具有两套以上的染色体。
A polyploid is a plant with more than two complete sets of chromosomes.
体是具有两套以上染色体的植物。
Genes and the important information they carry are packaged inside chromosomes.
基因及其携带的信息被包装进染色体中。
Gene resides within long strands of DNA which in turn make up the chromosomes.
基因存在于dna长链上，而dna的排序构成了染色体。
The genetic information is carried in the DNA of the chromosomes and mitochondria.
遗传信息由染色体和线粒体的DNA携带。
A frame method for representing knowledge is used to describe the structure of chromosomes.
知识表达采用框架知识表示方法描述染色体的层次结构特征。
A frame method for representing knowledge is used to describe the structure of chromosomes.
知识表达采用框架知识表示方法描述染色体的层次结构特征。
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