You asked: During which phase do chromosomes become visible under light microscope?

Is chromosome visible under light microscope?

Chromosomes, composed of protein and DNA, are distinct dense bodies found in the nucleus of cells. During most of the cell cycle, interphase, the chromosomes are somewhat less condensed and are not visible as individual objects under the light microscope. …

Why is a chromosome visible under a light microscope?

Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.

During which phases of mitosis are the chromosomes visible?

In prophase, each chromosome becomes condensed and more visible, and there is the breakdown of the nuclear membrane and appearance of spindle fibers. In the next phase, metaphase, the chromosomes line up along the metaphasic plate.

When can these chromosomes be seen clearly under the microscope?

Chromosomes can be viewed relatively easily under the microscope, but only just before, during, and immediately after cell division. When a cell divides, the nucleus and its chromosomes also divide.

Why do chromosomes become visible?

During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).

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How do chromosomes become visible under a light microscope as a cell prepares to divide?

How do chromosomes become visible under a light microscope as a cell prepares to divide? The cell becomes flat and thin, and its internal structures become easier to see. … Chromosomes become more intensely colored before cell division. Thin strands of chromatin coil tightly and then coil again.

Why do chromosomes become visible during mitosis?

Why are chromosomes visible during mitosis? Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.