NEET BIOLOGY

Detailed explanation-1: -Synapsis is the pairing of two chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.

Detailed explanation-2: -Synapsis does not occur during mitosis, because homologous chromosomes do not pair with their counterparts. Synapsis starts when proteins connecting the various chromosomes to the nuclear membrane start to migrate.

Detailed explanation-3: -There are two major events that occur in both mitosis and meiosis i.e. the division of nuclear material called karyokinesis and the division of cytoplasm called cytokinesis. Karyokinesis means the process of division of the nucleus during mitosis or meiosis.

Detailed explanation-4: -Which of the following does NOT occur in both mitosis and meiosis? Splitting of homologous pairs of chromosomes.