Avaccine is something that is used to

It is used to eliminated viruses in your body.

Explanation:

Like a flu shot for example, it signals your immune system to generate cells to kill the influenza inside your body so it doesn't replicate inside your DNA.

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.