Final answer:
In metaphase I of meiosis, there would be 28 chromatids in a dividing diploid cell.
Step-by-step explanation:
In metaphase I of meiosis, the homologous chromosomes line up in the middle of the cell. Each chromosome consists of two sister chromatids, so the number of chromatids is twice the number of chromosomes. Since the haploid number of the species is 14 and a diploid cell has twice the number of chromosomes as a haploid cell, the diploid number would be 2 x 14 = 28. Therefore, there would be 28 chromatids in metaphase I of a dividing diploid cell.