$A$ special sequence from where $DNA$ replication starts.

Restriction in Restriction endonuclease enzyme refers to

Crown gall disease in plants is caused by

Which of the following is a plasmid?

Select the option that excludes characteristics applicable to plasmids:
$(a)$. Circular $DNA$
$(b)$. Linear $DNA$
$(c)$. Present in all bacteria
$(d)$. Contain essential genes
$(e)$. Extra chromosomal self-replicating

Which cellular component is associated with genetic engineering?