Question 3 of 5 Which research question is most effective? O A. When was the middle school in our city built? O B. In what environment do people of all ages learn best? O C. Should our city build a new middle school? O D. How old are middle schools across the country SUBMIT

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.