Which of the following does not exist during prophase?. Single choice. A. Condensation of chromatins
B. Disappearance of nuclear membrane
C. Pairing of homologous chromosome
D. Chromosomes lined up in the middle of the cell
Option 2

Option B.

Disappearance of nuclear memberane.

Explanation:

This is because Prophase is marks the beginning of mitosis, and it is the process where replicated genetic contents are separated into daughter cells. During prophase, ttgere is condensation of chromatin. The chromatin coils and it become compact, which lead to the formation o chromosomes that are visible. The sister chromatids are joined together at the centromere. The mitotic spindle begins to form. The mitotic spindle is consist of long proteins called microtubules that firms at opposite end. The spindle separate the two sister chromatids.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.