What does $In$ $vitro$ mean?

The two main techniques that gave birth to modern biotechnology are
$I.$ Chemical engineering
$II.$ Genetic engineering
$III.$ Human genome engineering
$IV.$ Molecular biology
Choose the correct option.

It is now possible to breed plants and animals with desired characters through

When did Cohen and Boyer complete the construction of the first $r-DNA$ by isolating an antibiotic resistance gene?

The term genetic engineering is used for

$I.$ Copy number is defined as the number of copies of a plasmid present in a cell.
$II.$ It varies from $15-100$ copies per cell. Choose the correct option regarding the above statements.