What is the application of Somatic Cell Nuclear Transfer Technology?

In the context of recent advances of human reproductive technology, “Pronuclear Transfer” is used for

Which of the following is a non-sense codon?

In pea, a pure tall plant (TT) is crossed with a short plant (tt). What wil be the ratio of pure tall plants to short plants in the F2 generation ?

Which among the following is a character of chloroplast which makes them qualified in self-replication?

Which one of the following statements about variations is not true ?