How can changes in an ecosystem affect interacting relationships among organisms in a area?

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

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.