题目

已知果蝇中，灰身与黑身为一对相对性状（显性基因用B表示，隐性基因用b表示）；直毛与分叉毛为一对相对性状（显性基因用F表示，隐性基因用f表示）。两只亲代果蝇杂交得到以下子代类型和比例：灰身、直毛灰身、分叉毛黑身、直毛黑身、分叉毛 雌蝇3/401/40 雄蝇3/83/81/81/8   请回答：  （1）控制灰身与黑身的基因位于               ；控制直毛与分叉毛的基因位于              。  （2）亲代雄性果蝇的表现型为            �So far, we have l_______________ five Units in Module 7.Now let’s  1. ____________  make a brief  _____________(介绍) to each unit. Unit One is about     2._____________ Marty’s story. Though he is _________（残疾）, he never gives up     3._____________ and becomes more i____________(独立). Unit Two is about “Robots”.  4.______________ Robots can do many things ___________of humans. “Under the sea”    5.______________ is the topic of Unit Three. It's an ______________（轶事） of a killer   6.______________ whale. The story of Unit Four is about “Sharing”. Jo is a v______. She  7.______________ offered to teach in the r________area. In Unit Five ,we know Xie Lei  8.______________ went ________ to study business. She learned a lot there.            9______________           In addition, we’ve also learned another two units in Module 8--”California”  and  “________”    (克隆).      10.____________