留美老师带你每日说英文 第1118期:身高与基因的关系(在线收听) |
In 2007, scientists compared height and DNA between more than 11,000 pairs of siblings and found that, across humans, 86% of height's variation can be explained by genetics. As traits go, this is very high; for comparison, genetics only explains about 26% of left-handedness. 学习重点: 1.compare 比较,对照 2.pair 一对,一双 3.sibling 兄弟姊妹 4.variation 变化;变动 5.genetics 遗传学
6.trait 特征,特点 |
原文地址:http://www.tingroom.com/lesson/mrsyw/464226.html |