2006-06-18 06:12:33 · 4 answers · asked by faith_jones 1 in Education & Reference ➔ Primary & Secondary Education
centrioles help in the formation of spindle fibres. These spindle fibres attach to the chromatids at a point called kinetochore and pull the chromatids apart. Then they start shortening which pulls the chromatids towards the poles.
In prophase, the chromatin material condenses and individual chromosomes are visible.
2006-06-18 06:19:39 · answer #1 · answered by Dream Girl 2 · 2⤊ 0⤋
In other words, centrioles help make the spindle fibers, and those are things that stretch across the cell and start pulling the chromatids... which are these bundled up groups of chromosomes, you know X and Y, etc.... to each side of the cell. It has to do this because since it's about to split, it needs to get everything to the sides in the right amount.
The cell sits there, and then in the prophase the jumbled up mess of chromosomes starts to sort out a bit so that it's not like... ok this half of the cell gets this pile of chromosomes and that side gets the other. It's more like... ok, 1 for you, 1 for me. 2 for you, 2 for me. The chromosomes just come out during prophase
2006-06-18 13:20:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The centrioles give out spindle fibres which join the centromeres of the chromosomes, after the chromosome breaks into 2 parts. This happens during Anaphase.
During Prophase, the cell prepares itself metabolically and increases its cytoplasm. The centrioles come out from the centrosome. The cell may not not show any outward change.
2006-06-19 09:26:59 · answer #3 · answered by Ann 3 · 0⤊ 0⤋
I'm sure the centrioles pull apart the chromosomes and make sure each daughter cell gets a copy of the DNA.
2006-06-18 13:16:47 · answer #4 · answered by Showaddywaddy 5 · 0⤊ 0⤋