Noun
English Wikipedia has an article on:Gene knock-inWikipedia
knockin (plural knockins)
(genetics) The insertion of a cDNA sequence at a particular locus in an organism's chromosome
What am I afraid of? The IRS. Thats it. I dont want those people knockin on my door, man. Tracy Morgan
Additionally, the Guns N' Roses performance of "Knockin' on Heaven's Door" was released in August 1992 as a double A-side with the original Guns N' Roses studio recording of the song. Source: Internet
After all, it simply takes a successful self-marketing and social media campaign and voila: clients come a’ knockin' right? Source: Internet
James Taylor 's "Knockin' 'Round the Zoo" recalls his stay at McLean as a teenager. Source: Internet
Did Marciano get out of Joe Louis' shadow, knockin' out an old man? Source: Internet