So, when excess pressure is placed on a nerve for a few seconds to several minutes, the nerve loses its ability to conduct its electrical signals. This initially manifests as decreased sensation in the form of a pins and needles, tingling, itching, and/or painful sensation.
Report Abuse. During interphase, the cell is essentially preparing for mitosis. Thus, the nuclear membrane is still intact. The cell is merely replicating its DNA and chromosomes. During mitosis itself, however, the nuclear membrane breaks down so the chromosomes become visible under a microscope.
Interphase is followed by meiosis I and then meiosis II. Meiosis I separates homologous chromosomes, each still made up of two sister chromatids, into two daughter cells, thus reducing the chromosome number by half. During meiosis II, sister chromatids decouple and the resultant daughter chromosomes are segregated into four daughter cells.