MCQ
Route used by pollen tube for entering ovule is:
- ✓Any of the above.
- BChalaza.
- CMicropyle.
- DIntegument.
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$R$ : The linking of antibiotic resistance gene with plasmid vector became possible by enzyme $DNA$ ligase.
$(a)$ $C-$peptide is not present in mature insulin.
$(b)$ The insulin produced by $rDNA$ technology has $C-$peptide.
$(c)$ The pro-insulin has $C-$peptide.
$(d)$ $A-$peptide and $B-$peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.