MCQ
Wood is
- APrimary phloem
- BPrimary xylem
- ✓Secondary xylem
- DSecondary phloem
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Complete the given statement by filling appropriate options in the given blanks
$I.$ Polymerase Chain Reaction $(PCR)$ is a technique of synthesizing multiple copies of the desired gene in vitro
$II.$ This technique was developed by Kary Mullis in $1985$
$III.$ A single $PCR$ amplification cycle involves three basic steps; denaturation, annealing and extension
Which of the statement given above are correct?