[Campbell Biology P.293] Which of the following statements correctly describes a difference ... | Practice Question

Which of the following statements correctly describes a difference in cell division mechanisms among the organisms depicted in Figure 12.13?

  • A: In bacteria, the nuclear envelope remains intact, whereas in dinoflagellates, it breaks down.
  • B: In diatoms and some yeasts, the spindle forms outside the nucleus, similar to most eukaryotes.
  • C: In most eukaryotes, the nuclear envelope breaks down and the spindle forms outside the nucleus.
  • D: Dinoflagellates exhibit chromosome attachment to the nuclear envelope and spindle formation within cytoplasmic tunnels, a process reminiscent of most eukaryotic mitosis.

Explanation

Figure 12.13 d explicitly states that in most eukaryotes, including plants and animals, the nuclear envelope breaks down during mitosis and the spindle forms outside the nucleus.