Respuesta :

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

annastasia
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

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