University of Central Florida (UCF) BSC1005 Biological Principles Practice Exam 2

The primary purpose of meiosis is indeed to produce gametes with half the number of chromosomes. Meiosis is a specialized type of cell division that occurs in sexually reproducing organisms and is crucial for sexual reproduction. Through the process of meiosis, a diploid cell (containing two sets of chromosomes) undergoes two rounds of division to generate four haploid gametes (sperm and egg cells in animals) that contain only one set of chromosomes. This reduction in chromosome number is essential for maintaining the stability of an organism's chromosome number across generations during fertilization, where two haploid gametes fuse to form a diploid zygote.

This mechanism ensures genetic diversity through processes such as independent assortment and crossing over during meiosis, which contribute to the variation seen in offspring. The other options do not correctly reflect the fundamental role of meiosis; for instance, creating identical cells for growth pertains to mitosis, while cell repair mechanisms typically involve different cellular processes not related to meiosis. Duplicating the genome refers more to the replication of DNA prior to cell division rather than the purpose of meiosis itself.