If inherited, these mutations persist as irreversible changes in the genetic composition of off-spring.
如果继承的，这些突变坚持不可逆转的变化，在遗传组成的场外春天。
2
Every living thing is a unique combination of the tiny pieces of matter called genes that carry information from parents to off-spring.
每一个生物都是由一些叫做基因的物质独特组合而成的，基因则是一种将遗传信息由父辈传给子辈的微小物质。
3
She believes she's a better mum for having had children early as she has lots of energy and can relate to her off-spring because they are closer in age.