雄性不育(male sterility)
雄性不育(male sterility)
相关考题:
The semantic components of the word“gentleman” can be expressed as ( ) A.+animate, +male, +human, +adult B.+animate, -male, +human, +adult C.+animate, +male, -human, +adult D.+animate, +male, +human, -adult
The semantic components of the word “gentleman” can be expressed as().A+animate,+male,+human,-adultB+animate,+male,+human,+adultC+animate,-male,+human,-adultD+animate,-male,+human,+adult
有一张UserInfo表,需要过滤出姓名(username)为xiaoming,性别(sex)为male的数据,假设只有一条数据符合条件,以下哪些语法是正确的?()A、UserInfo.objects.get(username=xiaoming,sex=male)B、UserInfo.objects.get(username=xiaoming).get(sex=male)C、UserInfo.objects.filter(username=xiaoming,sex=male)D、UserInfo.objects.filter(username=xiaoming).filter(sex=male)
The semantic components of the word “gentleman” can be expressed as().A、+animate,+male,+human,+adultB、+animate,+male,+human,-adultC、+animate,-male,+human,-adultD、+animate,-male,+human,+adult
在核—质互作雄性不育中,S(rfrf)♀×N(rfrf)♂交配,后代基因型及育性为()A、N(rfrf),雄性可育B、N(rfrf),雄性不育C、S(rfrf),雄性可育D、S(rfrf),雄性不育
单选题应用最广的雄性不育型是()A细胞核雄性不育型B细胞质雄性不育型C质-核互作不育型D质-核分离不育型