The nuclear envelope begins to break up in early ____.
A)anaphase
B)interphase
C)metaphase
D)prophase
E)telophase

Question

Quizplus · Accepted Answer

The nuclear envelope begins to break up in prophase, which is the first stage of mitosis. During prophase, the chromatin condenses into visible chromosomes and the spindle fibers begin to form, causing the nuclear envelope to break down. In anaphase, the sister chromatids separate and are pulled to opposite ends of the cell by the spindle fibers. In metaphase, the chromosomes line up along the equator of the cell, but the nuclear envelope is still intact. In telophase, the nuclear envelope reforms around the separated sister chromatids.

The Nuclear Envelope Begins to Break Up in Early ____