What is the name of the drug that is a psychomotor stimulant with a chemical structure similar to methamphetamine that was originally patented in germany in 1928?

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.

idk let me see fdfdgdg