题目

Fish contains lost of omega-3 fatty acids．These fatty acids have been shown to help prevent heart disease，lower blood pressure and reduce the risk of strokes．Researchers suggest that these benefits of eating fish far outweigh the risks of getting sick from contaminated fish． Ongoing studies find that omega-3 fatty acids work magic on the brain too．Pregnant? Go out and eat fish! One study tracked a group of expectant women who ate more than 340 grams of fish per week．It turns out they gave birth to children who，years later，scored really high on IQ tests． How can you add fish t请根据表中调查信息回答问题：组别父母形状　调查家庭数　子女形状　父亲　母亲能卷舌　不能卷舌　1　能卷舌能卷舌　80　73　　252　不能卷舌　不能卷舌　63　0　693　能卷舌　不能卷舌　78　6423（1）根据表中的第组别判断显性性状．（2）假如用A表示显性基因，a表示隐性基因，第三组中小花能卷舌，则小花的父亲、母亲和小花本人的基因组成分别是 ．