下列现象和特征形成与自然选择无关的是 A.拟态       B.共生 

下列现象和特征形成与自然选择无关的是

A.拟态       B.共生       C.应激性         D.性别决定

答案

D


解析:

拟态是一种典型的适应,应激性是适应的基础,两种生物通过共生的方式适应环境。

相关题目

某品牌抗菌洗手液中含有一种叫做氯二甲苯酚的成分,它具
某品牌抗菌洗手液中含有一种叫做氯二甲苯酚的成分,它具有良好的抗菌活性。已知氯二甲苯酚的化学是为C8H9ClO,问: (1)氯二甲苯酚是由       
The teacher wondered whether those ______at the back of the classroom could hear
The teacher wondered whether those ______at the back of the classroom could hear him. A. seating          B. sit            C. seated       D. sat
A、B两个质点在同一直线上运动,它们的位移—时间图像如图
A、B两个质点在同一直线上运动,它们的位移—时间图像如图所示,图中两条直线平行,关于A、B两个质点的运动,下列说法中错误的是:(   )A.它
若∠a=79°25′,则∠a的补角是   ( )   A.100°35′  
若∠a=79°25′,则∠a的补角是   ( )   A.100°35′     B.11°35′       C.100°75′      D.101°45 
 Shelly had prepared carefully for her driving test so that she could pass it
 Shelly had prepared carefully for her driving test so that she could pass it at her first________. A.attempt                   B.intention           C.desire   
如图所示,绝缘杆两端固定带电小球A和B,轻杆处于匀强电场
如图所示,绝缘杆两端固定带电小球A和B,轻杆处于匀强电场中,不考虑两球之间的相互作用.最初杆与电场线垂直,将杆右移的同时使其顺时针转过90
已知F1、F2是双曲线=1的焦点,PQ是过焦点F1的弦,那么|PF2|+|QF2|-|P
已知F1、F2是双曲线=1的焦点,PQ是过焦点F1的弦,那么|PF2|+|QF2|-|PQ|的值是_____________________.
China is the home of tea,  36 has more than 4,000 years of history. People in
China is the home of tea,  36 has more than 4,000 years of history. People in China drink tea daily.  37  the three major drinks ----tea, coffee and cocoa, tea is drunk by   38 people in the w

最新题目