Question

why is sticky end called cos site?​

Answer 1

Explanation:

Because it sounds sticky and it's name of a German personne

Answer 2

Answer:

"Cos" is the abbreviation of "cohesive end site". This is a speciality of the lambda phage which has to be linearized to fit into the phages head, but circularizes in the host cell. To achieve this, it has the cohesive (or sticky) sites at each end