fraternal twin

美 [frəˌtɜːrnl ˈtwɪn]英 [frəˌtɜːnl ˈtwɪn]

fraternal twin

noun

双卵性双胞胎之一
either of two children or animals born from the same mother at the same time but not from the same egg

noun

either of two twins who developed from two separate fertilized eggs: Synonym: dizygotic twin

数据来源：WordNet

1

Researchers measure a trait , such as sensation-seeking , in identical and fraternal twin pairs growing up in the same environment , and consider whether the two twin types are equally similar .

研究者检测一种特性，例如感觉的寻求，在相同的环境下，相同的双胞胎兄弟成长，考虑是否两个双胞胎类型是完全相似。
2

In a fraternal twin situation , each baby inherits a different combination of genes from mom and dad , so when the parents are of different races , it is possible the inherited genes for skin color can differ .

在异卵双胞胎中，每个胚胎会遗传父母不同的基因组合，所以如果父母是不同的人种，那么孩子就极有可能会遗传不同的肤色基因。