What You Want To Become in Future

A teacher in her class tells students, 'First, do what I want you to do and then you may do what you want to do.' The situation demonstrates the use of which of the following?

In a certain code language ja na da means what you want, na pa ka means they want food, and ka ho ni means food and water. What does da mean in that code language? 1) what 2) you 3) what or you 4) Data inadequate 5) None of these

If you want of recover many copies of the target DNA, you will choose a vector

What strategy would you suggest if a person wants to evolve a pure line in an animal ?