Which descriptions apply to prokaryotic cells? . are usually single-celled contain a nucleus do not contain membrane-bound organelles have dna located in cytoplasm

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

i would say it is

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.