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What happens in metaphase?

What happens in metaphase?

Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell. As metaphase continues, the cells partition into the two daughter cells.

Why do chromosomes line up in the middle of the cell?

In animal cells, the chromosomes line up in the center of the cell. Therefore, a safety mechanism called the spindle assembly checkpoint ensures that all of the chromosomes have correctly attached to the spindle before chromosome separation begins.

What type of cells are created by meiosis?

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

Does mitosis occur in heart cells?

Mitosis does occur in adult cardiac myocytes.

Do white blood cells divide?

White cells are highly differentiated for their specialized functions, and they do not undergo cell division (mitosis) in the bloodstream; however, some retain the capability of mitosis.

Why do white blood cells not divide?

White blood cells like granulocytes, macrophages, dendritic cells and natural killer cells are all terminally differentiated cells, hence don’t divide at all. All white blood cells are derived from bone marrow and they divide and re-divide there. When they are released in the blood, they do not divide then.

Which WBC is maximum in number?


Which is the biggest WBC?

This is a photo of a monocyte in a blood smear. These are the largest type of white blood cells, and can be up to 20┬Ám in diameter. They have a large eccentrically placed nucleus, which is kidney bean shaped.

Do red or white blood cells live longer?

Red blood cells live about 120 days, and platelets live about 6 days. Some white blood cells live less than a day, but others live much longer.

Is it bad to have too much white blood cells?

This is not necessarily the case! A high white blood cell count isn’t a specific disease in itself, but it can indicate an underlying problem, such as infection, stress, inflammation, trauma, allergy, or certain diseases. That’s why a high white blood cell count usually requires further investigation.