皮皮学，免费搜题
登录
搜题
【简答题】
果蝇的染色体组如下图所示。如果Ⅳ号染色体多一条（这样的个体称为Ⅳ—三体）或少一条（Ⅳ—单体）均能正常生活，而且可以繁殖后代。三体在减数分裂时，3条同源染色体中的任意2条配对联会并正常分离，另一条染色体随机移向细胞一极，各种配子的形成机会和可育性相同。请分析回答下列问题。 从变异类型分析，单体果蝇的形成属于（），要确定其染色体数目和形态特征的全貌，需对其进行（）分析。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【简答题】Have you ever dreamed of visiting a planet in the Milk Way? While the trip sounds exciting, it would take years and years to reach your destination. So in the future, bedtime for astronauts may be mor...
查看完整题目与答案
【单选题】While conducting an observation, which of the followings is NOT recommended?
A.
Informing everyone on side about your presence.
B.
Getting permission before the observation.
C.
Taking notes while on site.
D.
Keeping records of date, time of day, and duration of the observation.
查看完整题目与答案
【单选题】进程的三个基本状态在一定条件下可以相互转换,进程由就绪状态变为执行状态的条件是( )。
A.
时间片用完
B.
等待某事件发生
C.
等待的某事件己发生
D.
被进程调度程序选中
查看完整题目与答案
【单选题】血清或酶制剂使用
A.
巴氏消毒法
B.
煮沸法
C.
高压蒸气灭菌法
D.
紫外线消毒法
E.
过滤除菌法
查看完整题目与答案
【单选题】进程的三个基本状态在一定条件下可以相互转化,进程由就绪状态变为运行状态的条件是( )。
A.
时间片用完
B.
等待某事件发生
C.
等待的某事件已发生
D.
被进程调度程序选中
查看完整题目与答案
【单选题】While conducting an operational check of the cabin pressurization system, the pilot discovers that the rate control feature is inoperative. He knows that he can manually control the cabin pressure, so...
A.
He can handle a little problem like this.
B.
What is the worst that could happen.
C.
It's too late to fix it now.
查看完整题目与答案
【多选题】使用HMG - CoA还原酶抑制剂须慎重，以下情况应及时停药的是
A.
血清AST值为40U
B.
血清AST值为130U
C.
血清CPK值为0~200U
D.
严重急性感染、创伤或大手术
E.
有弥散性肌痛、肌软弱、赤褐色尿
查看完整题目与答案
【单选题】In South Africa, ___________________________________.
A.
When dealing with foreigners, most South Africans shake hands while maintaining eye contact and smiling
B.
The women wait for man to extend their hands firstly to shake hands
C.
You can be late for an hour if you are invited to South African’s house
D.
Long-standing personal relationship should be established before conducting business.
查看完整题目与答案
【单选题】While conducting an interview, which of the followings is NOT recommended?
A.
Arriving the interview site a bit earlier than the appointment time.
B.
Chatting informally with the interviewee prior to the interview.
C.
Making comments and judgment when taking notes during the interview.
D.
Sending a thank-you email to the interviewee after your meeting.
查看完整题目与答案
【单选题】While conducting an interview, a technical writer should:
A.
ask all the questions that have been prepared before the interview.
B.
arrive the interview site a bit earlier than the appointment time.
C.
comment on the notes during the interview.
D.
keep the interviewee’s answer as concise as possible.
查看完整题目与答案
相关题目：
【简答题】Have you ever dreamed of visiting a planet in the Milk Way? While the trip sounds exciting, it would take years and years to reach your destination. So in the future, bedtime for astronauts may be mor...
查看完整题目与答案
【单选题】While conducting an observation, which of the followings is NOT recommended?
A.
Informing everyone on side about your presence.
B.
Getting permission before the observation.
C.
Taking notes while on site.
D.
Keeping records of date, time of day, and duration of the observation.
查看完整题目与答案
【单选题】进程的三个基本状态在一定条件下可以相互转换,进程由就绪状态变为执行状态的条件是( )。
A.
时间片用完
B.
等待某事件发生
C.
等待的某事件己发生
D.
被进程调度程序选中
查看完整题目与答案
【单选题】血清或酶制剂使用
A.
巴氏消毒法
B.
煮沸法
C.
高压蒸气灭菌法
D.
紫外线消毒法
E.
过滤除菌法
查看完整题目与答案
【单选题】进程的三个基本状态在一定条件下可以相互转化,进程由就绪状态变为运行状态的条件是( )。
A.
时间片用完
B.
等待某事件发生
C.
等待的某事件已发生
D.
被进程调度程序选中
查看完整题目与答案
【单选题】While conducting an operational check of the cabin pressurization system, the pilot discovers that the rate control feature is inoperative. He knows that he can manually control the cabin pressure, so...
A.
He can handle a little problem like this.
B.
What is the worst that could happen.
C.
It's too late to fix it now.
查看完整题目与答案
【多选题】使用HMG - CoA还原酶抑制剂须慎重，以下情况应及时停药的是
A.
血清AST值为40U
B.
血清AST值为130U
C.
血清CPK值为0~200U
D.
严重急性感染、创伤或大手术
E.
有弥散性肌痛、肌软弱、赤褐色尿
查看完整题目与答案
【单选题】In South Africa, ___________________________________.
A.
When dealing with foreigners, most South Africans shake hands while maintaining eye contact and smiling
B.
The women wait for man to extend their hands firstly to shake hands
C.
You can be late for an hour if you are invited to South African’s house
D.
Long-standing personal relationship should be established before conducting business.
查看完整题目与答案
【单选题】While conducting an interview, which of the followings is NOT recommended?
A.
Arriving the interview site a bit earlier than the appointment time.
B.
Chatting informally with the interviewee prior to the interview.
C.
Making comments and judgment when taking notes during the interview.
D.
Sending a thank-you email to the interviewee after your meeting.
查看完整题目与答案
【单选题】While conducting an interview, a technical writer should:
A.
ask all the questions that have been prepared before the interview.
B.
arrive the interview site a bit earlier than the appointment time.
C.
comment on the notes during the interview.
D.
keep the interviewee’s answer as concise as possible.
查看完整题目与答案