MCQ
$DNA$ polymerase helps in
- AJoining bits of $DNA$
- ✓Splitting or separation of two strands of $DNA$
- CRenaturation
- DDenaturation
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$I.$ It represents typical agarose gel electrophoresis which showing differential migration of $DNA$ fragments
$II.$ Lane $1$ contains undigested $DNA$ fragments
$III.$ Lanes $2$ to $4$ contains digested $DNA$ fragment
$IV.$ Smallest $DNA$ bands are present at ( $A$ ) position and largest $DNA$ bands are present at ( $B$ ) position
Match List $- I$ with List $- II$ with respect to methods of Contraception and their respective actions.
| List$-I$ | List $- II$ |
| $(a)$ Diaphragms | $(i)$ Inhibit ovulation and Implantation |
| $(b)$ Contraceptive | $(ii)$ Increase phagocytosis of sperm within Uterus |
| $(c)$ Intra Uterine Device | $(iii)$ Absence of Menstrual cycle and ovulation following parturition |
| $(d)$ Lactational | $(iv)$ They cover the cervix blocking the entry of sperms |
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