Chromosomes Become Visible During _____.

Mitosis is an incredible process with precise steps and regulation. Without mitosis, life would be impossible. Nonetheless, the process tin can seem a flake complex.

A cell going through the six stages of mitosis

To begin, let's explore the dissimilar stages of mitosis.

An artist's rendering of a cell in prophase, and a micrograph of a cell in prophase. The condensed chromosomes are clearly visible in both.

Prophase is the first stage of mitosis. In prophase,

chromosomes condense and become visible
spindle fibers emerge from the centrosomes
nuclear envelope breaks downwards
nucleolus disappears

An artist's rendering of a cell in prometaphase, and a micrograph of a cell in prometaphase. In both images, mitotic spindles are visible, and centrosomes are moving toward opposite poles.

Prometaphase is the second stage of mitosis. In prometaphase,

chromosomes go along to condense
kinetochores announced at the centromeres
mitotic spindle microtubules attach to kinetochores
centrosomes motion toward opposite poles

An artist's rendering of a cell in metaphase, and a micrograph of a cell in metaphase. In both images, the mitotic spindles are clearly visible and chromosomes are lined up.

Metaphase is the tertiary stride in mitosis. In mitosis,

mitotic spindle is fully developed, centrosomes are at opposite poles of the jail cell
chromosomes are lined upwards at the metaphase plate
each sister chromatid is attached to a spindle cobweb originating from opposite poles

An artist's rendering of a cell in anaphase, and a micrograph of a cell in anaphase.

Anaphase is the fourth step in mitosis. In anaphase,

cohesin proteins binding the sister chromatids together suspension down
sister chromatids (now called chromosomes) are pulled toward opposite poles
non-kinetochore spindle fibers lengthen, elongating the cell

An artist's rendering of a cell in telophase, and a micrograph of a cell in telophase.

Telophase is the 5th step in mitosis. In telophase,

chromosomes get in at contrary poles and begin to decondenese
nuclear envelope cloth surrounds each ready of chromosomes
the mitotic spindle breaks down

An artist's rendering of an animal cell undergoing cytokinesis, and a micrograph of a plant cell undergoing cytokinesis. In both, the two daughter cells can clearly be seen dividing.

Cytokinesis is the 6th and final step of mitosis. In cytokinesis,

Fauna cells: a cleavage furrow separates the girl cells
Found cells: a jail cell plate separates the daughter cells

Mitosis

At present that nosotros've reviewed each of the steps, permit's await at the cycle as a whole:

The cell cycle, with each step labelled. The six steps in order are prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. Mitosis ends when two daughter cells are produced.

Mitosis: In Summary

In prophase, the nucleolus disappears and chromosomes condense and get visible. In prometaphase, kinetochores appear at the centromeres and mitotic spindle microtubules attach to kinetochores. In metaphase, chromosomes are lined up and each sister chromatid is attached to a spindle fiber. In anaphase, sister chromatids (now chosen chromosomes) are pulled toward opposite poles. In telophase, chromosomes arrive at opposite poles, and nuclear envelope material surrounds each ready of chromosomes. Finally, in cytokenesis, the ii daughter cells are separated.

Let's have a quick quiz to review what we've merely learned!

Practice Quiz

Which of the following options shows the right lodge of the steps of mitosis?

prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis.
metaphase, prometaphase, prophase, anaphase, telophase, and cytokinesis.
prophase, prometaphase, metaphase, telophase, anaphase, and cytokinesis.

What step of mitosis is shown hither?

an artist's rendering of a cell. The nuclear envelope is breaking down and chromosomes are visible.

What step of mitosis is shown here?

The mitotic spindles are clearly visible and chromosomes are lined up.

Which stride does the following passage draw?

The kinetochores appear at the centromeres, the mitotic spindle microtubules adhere to kinetochores, and the centrosomes motion toward opposite poles.

What occurs during anaphase?

Each sis chromatid (or chromosome) is attached to a spindle fiber originating from opposite poles
Sister chromatids (or chromosomes) are pulled toward opposite poles
Sister chromatids (or chromosomes) arrive at reverse poles and brainstorm to decondense

Which of the post-obit is the right order of events in mitosis?

Sister chromatids line upwards at the metaphase plate. The kinetochore becomes fastened to the mitotic spindle. The nucleus reforms and the prison cell divides. Cohesin proteins suspension down and the sister chromatids separate.
The kinetochore becomes attached to the mitotic spindle. Cohesin proteins break downwards and the sis chromatids divide. Sister chromatids line up at the metaphase plate. The nucleus reforms and the jail cell divides.
The kinetochore becomes attached to the cohesin proteins. Sister chromatids line upwardly at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the prison cell divides.
The kinetochore becomes fastened to the mitotic spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.

Show Answer

Answer d is right.