| 1. | A locus is the "location" of a gene along a chromosome .
位点是基因在染色体的位置。 |
| 2. | The standard practice is to call the entire structure a chromosome and each of its strands a sister chromatid .
标准的做法是把整个结构称为一个染色体，而把它的各条称为姐妹染色单体。 |
| 3. | The position that a given gene occupies on a chromosome
基因座在一条染色体上某种给定基因所占的位置 |
| 4. | Chromosome mutation a change in the number or arrangement of genes in a chromosome
染色体突变：生物细胞中染色体数目的增减和结构的改变。 |
| 5. | Chromosome map ( genetic map ) a diagram showing the order of genes along a chromosome
染色体图谱（遗传学图谱） ：显示染色体上基因顺序的图谱。 |
| 6. | Genetic map a map showing the sequence of particular genes or segments of dna on a chromosome
遗传图谱（遗传图） ：是显示染色体中特定基因或dna片段序列的图谱。 |
| 7. | Gene - a functional unit of heredity which is a segment of dna located in a specific site on a chromosome
基因位于染色体特定部位代表遗传功能单位的dna片断。 |
| 8. | In some of the eggs , the genetic material integrates at a random site on a chromosome and so becomes part of the mouse cell ' s genetic material
在某些卵里基因物质在随意位点与染色体整合而成为老鼠细胞的遗传物质。 |
| 9. | Locus ( pl . loci ) the position of a gene on a chromosome . alleles of the same gene occupy the equivalent locus on homologous chromosomes
基因位点，基因座：基因在染色体上的位置。等位基因位于同源染色体相对应的位点上。 |
| 10. | A part of a chromosome may be duplicated and occur either twice on the same chromosome or on two different nonhomologous chromo - somes : this is a duplication
如果同一条染色体或非同源的两条染色体上的某一个部分出现两份或两份以上的现象，那么这种现象就叫做重复。 |
