How many major stages does Meiosis have? 1 false 2 true 3 false 4 false Single Which of the following does NOT occur during Stage 1 of Meiosis? Sister chromatids separate true Chromosome number does not change false Genetic recombination is initiated false Sister chromatids separate and chromosome number does not change false Single Which of the following occurs in Prophase II? Spindle fibers separate false Nuclear envelope disappears true Four haploid cells are produced false Chromosomes align at the center false Single What is the importance of “crossing over” in prophase I of meiosis? A. It allows the mother’s genes to mix with the father’s genes false B. It prevents genetic variation false C. It allows the traits of the child to be a combination of the father’s and mother’s genes false D. A and C false Single Which of the following events occur in telophase I of meiosis? A tetrad is produced false Spindle fibers separate the tetrads false The chromosomes decondense true Tetrads are aligned at the center false Single Which of the following is the CORRECT arrangement of the substages of prophase I of meiosis? Zygotene-Pachytene-Leptotene-Diakinesis-Diplotene false Prophase-Metaphase-Anaphase-Telophase false Leptotene-Zygotene-Pachytene-Diplotene-Diakinesis true Metaphase-Anaphase-Prophase-Telophase false Single Which stage of prophase I of meiosis forms the synaptonemal complex? Zygotene true Anaphase false Leptotene false Telophase false Single Which of the following events in meiosis ensures that no one is alike even among siblings, except in the case of twins? Assortment of sister chromatids in meiosis II is random false Orientation of each homologous pair during metaphase I is random false Chromosome combination after meiosis I is random false All of the above true Single Which of the following pairs is CORRECT? Pachytene: genetic recombination occurs true Leptotene: Tetrad or bivalent is formed false Diakinesis: Synaptonemal complex disappears false Diplotene: Nuclear membrane disintegrates false Single Each human is unique because of genetic variation. Which of the following events causes this? Crossing over false Random chromatid assortment false Fertilization false Crossing over and random chromatid assortment false Single