Explain why scientists believe the Abert’s and Kaibab squirrels are examples of speciation

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

your answer is "the 1950's"

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.