MCQ
Emergency contraceptives are effective if used within:
- ✓$72 \;hrs$ of coitus
- B$72 \;hrs$ of ovulation
- C$72 \;hrs$ of menstruation
- D$72 \;hrs$ of implantation
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$R$ : Different types of alcoholic drinks are obtained only by fermentation, always followed by distillation process.
| $(a)$ Bacillus thuringiensis | $(i)$ Cloning vector |
| $(b)$ Thermus aquaticus | $(ii)$ Construction of first $rDNA$ molecule |
| $(c)$ Agrobacterium tumefaciens | $(iii)$ $DNA$polymerase |
| $(d)$ Salmonella typhimurium | $(iv)$ Cry proteins |
Select the correct option from the following:
$(a)\quad(b)\quad(c)\quad(d)$