What is the first phase of mitosis? include a brief description (3-5 sentences of what occurs during this phase?

In mitosis 1 , the first stage is known as prophase..
chromatin material starts condensing into thread-like chromosomes
in this stage spindle fibres form from the opposite poles 
the nuclear envelope disappears
nucleolus disappears

The first phase of mitosis is - prophase

description -
1)chromosome become Distinct

2)sister chromatids attached to each other at a small region called centromere.

3)spindle fibres appear between daughter centrioles.

4)nuclear member and nucleolous disappears