MCQ
Which among the following has 23 chromosomes?
- ASecondary oöcyte.
- BOögonia.
- CZygote.
- DSpermatogonia.
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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?