Sister species of palm trees on Lord Howe island in the Tasman Sea between Australia and New Zealand are an example of potential sympatric speciation. These species are both wind pollinated, which increases potential for gene flow within the island. However, there is little evidence of gene flow between these two palm tree species. Upon closer investigation, flowering time of the palm tree species (reproductive season) is separated by 6 weeks. What would you expect to happen if a major mutation in one palm species shifted the flowering time to be coincident (occurring at the same time) with the other palm species