The fly helped scientists discover that chromosomes contain small units of heredity called genes, and it helped unify research into heredity, evolution and development.
苍蝇帮助科学家们发现了同源染色体中包含一种称之为基因的遗传单位，还把遗传，进化和生长领域的研究统一起来。
It's helpful for children to understand that heredity, state of development, age, diet, exercise, posture, and other factors all affect how people's bodies look and function.
它能够帮助孩子理解到，遗传、成长状态、年龄、饮食、锻炼、姿势等等因素，都影响着一个人身体的外观和功能。
The chromosome is the gene delivery and the material base of evolution, development, heredity and variation.
染色体是基因的载体，是生物进化发育、遗传变异的物质基础。
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