Final answer:
The first step in the analysis of a cDNA sequence from the Landolita library is to isolate cellular mRNA and create a cDNA library.
Step-by-step explanation:
The first step in the analysis of a cDNA sequence from the Landolita library is to isolate cellular mRNA. This mRNA extract represents all of the transcripts in the cells at the time of isolation. Once the mRNA extract is obtained, it can be used to create a cDNA library, which consists of bacterial cells that have taken up plasmids recombined with cDNAs.