首页/ 题库 / [单选题]隐性上位作用且是独立遗传时,AaBb×a的答案

隐性上位作用且是独立遗传时,AaBb×aabb测交后代表现型比例为( )。

单选题
2021-09-01 20:41
A、1:1:1:1
B、1:1:2
C、9:3:3:1
D、3:1
查看答案

正确答案
B

试题解析

相关题目
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

OR指令的作用是:(  )  
 OR指令的作用是:( )
OR指令的作用是:( )
OR指令的作用是:(  )
若两对独立遗传的基因间存在显性上位作用,双因子杂种AaBb自交后代的表型分离比例为( )。
隐性上位作用且是独立遗传时,AaBb×aabb测交后代表现型比例为( )。
若两对独立遗传的基因间存在隐性上位作用,双基因杂种AaBb自交后代的表现型分离比例为( )。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
翻译:With Average or With Particular Average(WA or WPA)()
简述布尔算符(OR)的作用。
OR指令的作用是: 。( )
广告位招租WX:84302438

免费的网站请分享给朋友吧