In sweet pea plants, an allele for purple flowers (P) is dominant to an allele for red flowers (p). Additionally, an allele for long pollen grains (L) i dominant over an allele for short plan grains (l). Geneticist crossed plants that were heterozygous for both traits (PpLl X PpLl). What is the probability of producing plants with purple flowers and short pollen grains? 3/16 3/16 9/16 9/16 1/2 1/2 1/16