Biology, asked by eswabeshrat99, 9 months ago

describe formation of metaphase plate and the division of centromere during metaphase.

Answers

Answered by BrahmdeepSingh

Answer:

As a cell enters metaphase from prophase, nuclear membrane disappears. Chromosomes are tightly coiled and each chromosome is now made of two chromatids, attached at centromere. Spindle apparatus is fully formed during metaphase, made of spindle fibres. ... Metaphase plate lies perpendicular to spindle apparatus.

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Answered by Anonymous

Answer:

METAPHASE:-

the complete disintegration of the nuclear envelope marks the start of the second phase of mitosis, hence the chromosome are spread through the cytoplasm of the cell.

✌️in this stage at which morphology of chromosome easily studied.

At this stage , metaphse chromosome is made up of two two sister chromatids which are held together by the centromere, small disc shaped at the centromere is known as kinetic hires. this site serve as a site of attachment of spindle fibre to the chromosome that are moved into position at the centre of the cell. hence, the metaphse is characterised by all the chromosome coming lie at the equator with one chromatid of each chromosome connected by it's kinetechore to spindle fibre from one pole and it's sister chromatids connected by it's kinetechore to spindle fibers from the opposite pole.