MCQ
Sex is determined in human beings.
- ABy ovum.
- ✓At time of fertilization.
- C$40$ Days after fertilization.
- DSeventh to eight week when genitals differentiate in foetus.
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$I.$ ethanol $II.$ bread $III.$ Incilage
Choose the correct option
$(A)$ 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.