Which of the following occurs during meiosis but not during mitosis?
Synapsis occurs.[The pairing of homologous chromosomes that only occurs during prophase I of meiosis is called synapsis.]
During meiosis, a special type of cell division that occurs in the production of gametes (sex cells) in sexually reproducing organisms, several events occur that do not occur during mitosis, which is the type of cell division that occurs in somatic (non-reproductive) cells.
One of the most significant differences between meiosis and mitosis is that during meiosis, two rounds of cell division occur, resulting in the production of four genetically diverse haploid daughter cells.
During the first round of division, called meiosis I, homologous chromosomes pair up and exchange genetic material via a process called homologous recombination or crossing over. This shuffles the genetic material between the pairs of homologous chromosomes and creates new combinations of genes that are different from either parent’s genetic makeup.
During the second round of division, called meiosis II, the sister chromatids of each chromosome separate, and each haploid daughter cell receives one copy of each chromosome.
Thus, the process of homologous recombination, which shuffles genetic material and creates new gene combinations, occurs during meiosis but not during mitosis, making it one of the main events that occur during meiosis but not during mitosis.
More Answers:
Understanding Allosteric Inhibition: Importance, Examples, and MechanismsExploring the Importance of Activation Energy in Chemical Reactions and Designing Optimal Reaction Conditions
Unlocking the Power of Acetyl CoA: Its Role in Cellular Respiration and Synthesis of Key Molecules