1. Which of the statements are true about the cellular processesthat occur during specific phases of the cell cycle in somaticcells? Select all that apply.
   1. During S phase, there is synthesis of cell components requiredfor mitosis.
   2. During S phase, there is expression of proteins and enzymesrequired for DNA replication.
   3. During cytokinesis, separation of the cytoplasm forms twogenetically identical daughter cells.
   4. During the second gap phase, there is separation of replicatedchromosomes so that each daughter cell gets the same complement ofchromosomes.
   5. During the first gap phase, there is increasing expression ofcyclin genes if conditions favor cell division.
      

31. Why does meiosis result in more genetic variation than canbe explained by mutation alone?

35. A chemical is added to cells growing in a culture dish. Thischemical blocks the completion of DNA replication. In what stage ofthe cell cycle will the cells be stuck?

36. In diploid organisms, having two homologues of eachchromosome can be beneficial if one allele of a gene encodes anonfunctional protein. Can haploid organisms survive havingnonfunctional alleles? Explain your answer.

37. What would be the result if a cell completed interphase andmitosis but failed to complete cytokinesis—how many cells wouldthere be at that point, and how many chromosomes would those cellshave in comparison to the parent cell?

38. Describe at least two major differences between mitosis andmeiosis.