Genetic engineering is defined as .......

The process of modifying the genotype of an organism by introducing a foreign gene fragment is called ......

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.

Which of the following techniques gave birth to modern biotechnology?

The technique of altering the chemistry of genetic material ($DNA$ and $RNA$) to introduce it into host organisms and thus change the phenotype of the host organism is known as:

Discuss with your teacher what does 'a suitable gene' mean in the context of $DNA$ vaccines.