The pre-MRNA shown below is spliced as indicated using the A-shaped line notation we introduced in class (Note: all isoforms contain the first and last exon). To detect the resulting isoforms, you perform a Northem Blot on the spliced mature MRNA with Probes 1 and 2. Indicate which exons Probe 1 and Probe 2 bind, based on the banding pattem you observe. Probe 2000- 1500 Z010 300 500 800 1000-