Most Often,genomic Library Screening Uses ____

Question

Most often,genomic library screening uses ____.
A) a labeled, complementary single-stranded RNA or DNA molecule called a probe
B) colonies of vector bacteria on a Petri dish in order to replicate the desired genome
C) recombinant plasmids containing DNA and DNA ligase
D) cut plasmids containing recognition sites used to carry DNA molecules
E) tRNA polymerase copies with a truncated copy of a DNA template

Accepted Answer

Genomic library screening most often uses a labeled, complementary single-stranded RNA or DNA molecule called a probe to identify specific genes or sequences within the library. The probe hybridizes with the complementary sequence within the library, allowing researchers to isolate the desired DNA fragment.