Which of the following statements best describe the first tjing researchers need to do to manipulate dna

The procces of farming organism from the sea is ?

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)