英语翻译in sweet peas,the synthesis of purple anthocyanin pig-me

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/28 14:41:46

英语翻译
in sweet peas,the synthesis of purple anthocyanin pig-ment in the petals is controlled by two genes,B ans D .the pathway is
white-------(geneB enzyme)------blue------(gene D enzyme)----anthocyanin(purple)
a.what color perals would you expect in a pure-breeding plant unable to catalyze the first reaction?
b.what color perals would you expect in a pure-breeding plant unable to catalyze the second reaction?
c.if the plants in parts a and b are crossed,what color perals will the F1 plants have?
d.what ratio of purple:blue:white plants would you expect in the F2

在甜豌豆中,花瓣中紫色花青素的合成受到基因b和基因d两个基因的调控,方式如下：
白色——基因b转录的酶——蓝色——基因d转录的酶——花青素（紫色）
a：若纯合子植物不能催化第一个反应,它的花瓣将是什么颜色?
b：若纯合子植物不能催化第二个反应,它的花瓣将是什么颜色?
c：如果a,b两部分连锁,那么f1代的花瓣将是什么颜色?
d：f2代中紫色,蓝色,白色将是什么比例
再问： a,b 两部分连锁是什么意思啊？
再答：连锁就是亲代的基因不做分离。比如亲代是AaBb,A-B完全连锁，那么遗传时只会出现AB,ab两种配子，不会出现Ab,aB这种配子。

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