Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements
– Statements :
(A) Wings of butterfly and birds look alike and are the results of (i) , evolution
(B) Miller showed that CH₄, H₂, NH₃ and (i), when exposed to electric discharge in a flask resulted in formation of (ii) .
(C) Vermiform appendix is a (i) organ and an (ii) evidence pf evolution.
(D) According to Darwin evolution took place due to (i) and (ii) of the fittest.

The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join -

In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the -

The lac Operon consists of -