![For gene trap vector system, reporter gene and _____ are present. Reporter gene is _____](https://www.gkseries.com/blog/wp-content/uploads/2022/02/For-gene-trap-vector-system-reporter-gene-and-_____-are-present.-Reporter-gene-is-_____.png)
Q. For gene trap vector system, reporter gene and _____ are present. Reporter gene is _____
A. selectable marker, having promoter
B. selectable marker, promoterless
C. helper phage, promoterless
D. helper phage, having promoter
Answer: selectable marker, promoterless