Choose the correct sentence below. A: Sperm and egg cells are haploid cells B: The sperm is haploid, but the egg is diploid C: Sperm and egg are diploid cells D: The sperm is diploid, but the egg is haploid

If a particular trait had a gene that had a possibility of 9 alleles in the population of a species, which of the following is true regarding this gene? A: The diploid number for the alleles would be 18 for this organism. B: The haploid number for the alleles would be 9 for htis organism. C: The maximum number of alleles for this gene would be 2. D: There is infinite variety in the expression of this trait in one organism.