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 andare the results of ___$(i)$___ evolution.

$(B)$ Miller showed that $CH_4 , H_2 , NH_3$ and ___$(i)$___ when exposed to electric discharge in a flaskresulted in formation of ___$(ii)$___ .

$(C)$ Vermiform appendix is a ___$(i)$___ organ and an ___$(ii)$___ evidence of evolution.

$(D)$ According to Darwin evolution took placedue to ___$(i)$___ and ___$(ii)$___ of the fittest.

Definitions / Explanation : Analogous organs & Vestigial or rudimentary organs
 

Complete fossil of whose among the following is found

How do you express the meaning of words like race, breed, cultivars or variety ?