Consider the following grouped frequency distribution : 

What is mean deviation about the median ?  

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#Question id: 2449

#Unit 2. Cellular Organization

What is the correct order of the stages of mitosis?

a. anaphase               

 b. metaphase              

c. telophase    

d. prophase                 

e. prometaphase

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#Question id: 576

#Unit 1. Molecules and their Interaction Relevant to Biology

The hydrophobic cleft in globular proteins which bind substrate molecules is called the ________.

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#Question id: 2562

#Unit 2. Cellular Organization

Which of the following statements is true of steroid receptors?

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#Question id: 12116

#Unit 10. Ecological Principles

Which of the following is not required for a behavioural trait to evolve by natural selection? 

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#Question id: 7561

#General Aptitude

Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively . If they cross each other in 23 seconds, what is the ratio of their speeds?