1. Each cell of our bodies contains 46 chromosomes. 我们体内的每个细胞都有46条染色体。
2. 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。
3. Humans have 46 chromosomes, peas have 14, and crayfish have 200. 人类有46个染色体,豌豆有14个,而小龙虾有200个。
4. The scientists were most interested in parts connected to the ends of the chromosomes. 科学家们对连接到染色体末端的部分最感兴趣。
5. You know that all of a person's genetic information is contained on very long pieces of DNA called Chromosomes. 你知道,一个人所有的遗传信息都包含在一个叫做染色体的长 DNA 片段上。