[Campbell Biology P.1107] Refer to the cell lineage diagram for Caenorhabditis elegans in Fig... | Practice Question

Refer to the cell lineage diagram for Caenorhabditis elegans in Figure 47.19. Starting from the zygote, how many cell divisions are shown to lead to the formation of the intestinal cell line before hatching?

  • A: 7
  • B: 8
  • C: 9
  • D: 10

Explanation

Following the lineage path in Figure 47.19 from the zygote to any of the intestinal cell columns at the 'Hatching' level 10 hours , you can count 10 horizontal lines representing cell divisions. Each horizontal line indicates a new generation of cells resulting from a division.