这句英语如何理解,句子结构是啥样子的.

这句英语如何理解,句子结构是啥样子的.
The genetic inheritance a baby receives from its parents at the moment of conception fixes much of its later development,determining characteristics as varies as whether it will have blue eyes or suffer from a life-threating illness such as cystic fibrosis.

a baby receives from its parents at the moment of conception（婴儿在在有意识时从父母那里继承来的） 是修饰 the genetic inheritance（基因遗传） 的,意思是婴儿在在有意识时从父母那里继承来的基因遗传对它人生以后的成长发展作用重大,determining characteristics as varies as whether it will have blue eyes or suffer from a life-threating illness such as cystic fibrosis 这个句子是来解释前面所说到的重大作用的,它决定了很多不同的特性,比如说孩子是否会是蓝眼睛,或者孩子是否会受类似囊性纤维变性等危及生命的疾病的困扰.