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Which of the following occurs during prophase?

A. the chromosomes line up in the center of the cell
B. the sister chromatids separate

C. two new identical nuclei are formed

D.the nucleolus disappears and the nuclear membrane breaks down

Respuesta :

DarrickJ

Answer:

A. the chromosomes line up in the center of the cell

Explanation:

luisvaschetto

Prophase is the first phase of mitotic cell division. During this stage (prophase), the nucleolus disappears and the nuclear membrane breaks down.

  • Mitosis has four well-defined stages: prophase, metaphase, anaphase, and telophase.

  • During prophase, the genetic material (chromatin) within the cell nucleus condenses.

  • The nucleolus is a region within the cell nucleus responsible for synthesizing and assembling ribosomes. During prophase, this region (nucleolus) disappears.

  • Subsequently, the nuclear membrane that contains the genetic material in eukaryotic cells breaks down.

  • During metaphase, chromosomes line up at the equator plate of the cell.

In conclusion, during prophase, the nucleolus disappears and the nuclear membrane breaks down.

Learn more in:

https://brainly.com/question/13883655?referrer=searchResults

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