MCQ
Placenta is the region, where
- AFoetus is supplied by maternal blood
- BEmbryo is attached to mother by umbilical cord
- ✓Foetus receives maternal blood and nutrition
- DEmbryo is enclosed by membranes
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$I.$ Identification of $DNA$ with desirable genes
$II.$ Gene transfer
$III.$ Maintenance of $DNA$ in host and gene cloning
$IV.$ Introduction of $DNA$ into host to from recombinant $DNA$
Which of the following represents the correct sequence of steps?
| Column $- I$ | Column $- II$ |
| $(a)$ Clostridium butylicum | $(i)$ Cyclosporin $- A$ |
| $(b)$ Trichoderma polysporum | $(ii)$ Butyric Acid |
| $(c)$ Monascus purpureus | $(iii)$ Citric Acid |
| $(d)$ Aspergillus niger | $(iv)$ Blood cholesterol lowering agent |
$(a)\quad(b)\quad(c)\quad(d)$