During which parts of the cell cycle are chromosomes not visible?
The most obvious difference between interphase and mitosis involves the appearance of a cell’s chromosomes. During interphase, individual chromosomes are not visible, and the chromatin appears diffuse and unorganized.
During what phases of mitosis are chromosomes not visible?
During telophase both sets of chromatids are surround by new nuclear membranes and chromosomes decondense into chromatin. Cytokinesis (the dividing of the cytoplasm into two cells) follows telophase. If the cell were arrested during telophase, distinct chromatids would no longer be visible.
In what phase does chromosomes disappear?
Micrographs illustrating the progressive stages of mitosis in a plant cell. During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.
What are the 4 phases of mitosis and what happens in each?
There are four stages of mitosis: prophase, metaphase, anaphase and telophase.1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3) Anaphase: sister …
Why are chromosomes visible during mitosis but not at other times?
Chromosomes become visible during mitosis because they condense themselves to thick, visible strands. Regularly, they are more spread out as thin strands and therefore invisible to the eye even with a microscope.
What disappears during late prophase?
late prophase – the nuclear membrane and the nucleolus finally vanishes completely. The chromosomes are very distinct, easy to recognize and have clear “arms” composed of the two parts of the sister chromatids.