MCQ
In Meselson and Stahl's experiments, heavy $DNA$ was distinguished from normal $DNA$ by centrifugation in
- A$CsOH \;gradient$
- B$14 \mathrm{NH} 4 \mathrm{Cl}$
- C$15 \mathrm{NH} 4 \mathrm{Cl}$
- ✓$CsCl\; gradient$
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| List $- I$ | List $- II$ |
| $(a)$ Filariasis | $(i)$ Haemophilus influenzae |
| $(b)$ Amoebiasis | $(ii)$ Trichophyton |
| $(c)$ Pneumonia | $(iii)$ Wuchereria bancrofti |
| $(d)$ Ringworm | $(iv)$ Entamoeba histolytica |
Choose the correct answer from the options given below.
$(a)- (b)- (c) -(d)$
$I.$ gene flow
$II.$ genetic drift
$III.$ mutation
$IV.$ genetic recombination
$V.$ natural selection
The correct combination is