Quick Answer: What is the meaning of mitotic index?

Listen to pronunciation. (my-TAH-tik IN-dex) In a population of cells, the ratio of the number of cells undergoing mitosis (cell division) to the number of cells not undergoing mitosis.

What do you understand by mitotic index?

The mitotic index is a measure of cellular proliferation. It is defined as the percentage of cells undergoing mitosis in a given population of cells. … An elevated mitotic index indicates more cells are dividing.

Is a high mitotic index bad?

High proliferation rate is a hallmark of cancer. The mitotic index is a useful and simple method for analysis of cell proliferation.

What is the importance of mitotic index?

An elevated mitotic index indicates more cells are dividing and is an important prognostic factor predicting both overall survival and response to chemotherapy in most cancer types.

Why is the mitotic index less than 100?

Mitotic index decreases with increasing distance from root tip. That means gradual decrease in cell division as it moves from the zone of cell division to the zone of cell elongation.

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What is mitotic index a level biology?

mitotic index = number of cells with visible chromosomes ÷ total number of cells.

What is a mitotic index quizlet?

the mitotic index is the number of cells going through mitosis.

What does low mitotic rate mean?

To find the mitotic rate, the number of cells dividing in a certain amount of cancer tissue is counted. Mitotic rate is used to help find the stage of melanoma (a type of skin cancer) and other types of cancer. Higher mitotic rates are linked with lower survival rates. Also called MR.

Which normal cell would have the highest mitotic index?

Skin cells because they need to get replaced the most often. Which type of tissue would have a higher mitotic index, normal tissue or cancerous tissue? Cancerous tissue would have a higher mitotic index because the cells are constantly dividing.

What is the end result of mitosis?

Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.

What is the connection between the mitotic index and how often a cell divides?

The mitotic index measures the rate of cell division. It is defined as the percentage of cells undergoing mitosis (in prophase, metaphase, anaphase, or telophase) compared to the total number of cells in a population.

Is Interphase included in mitotic index?

Since the mitotic index, interphase and mitotic times are interrelated, the decrease in the height of the groups will be the same for any constant mitotic index after the appropriate changes in the units have been made.

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What is g2 phase in the cell cycle?

noun Cell Biology. the second growth period of the cell cycle following DNA replication and preceding prophase, during which the cell forms the materials that make up the spindle. Compare G1 phase, S phase.