Q3. Assertion: meiosis increases genetic variability. Reason: homologous chromosomes pair and their non-sister chromatids recombine during meiosis. Are both true, and does the reason explain the assertion?
Both are true, and the reason explains the assertion (NCERT pages 125 and 128).
Q4. Why are variations important, according to NCERT?
They are very important for the process of evolution (NCERT page 128).