I need more elaborate information about the different stages of mitosis.
Answers
Answer:
Explanation:
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase). These phases occur in strict sequential order, and cytokinesis - the process of dividing the cell contents to make two new cells - starts in anaphase or telophase.
Stages of mitosis: prophase, metaphase, anaphase, telophase. Cytokinesis typically overlaps with anaphase and/or telophase.
Stages of mitosis: prophase, metaphase, anaphase, telophase. Cytokinesis typically overlaps with anaphase and/or telophase.
You can remember the order of the phases with the famous mnemonic: [Please] Pee on the MAT. But don’t get too hung up on names – what’s most important to understand is what’s happening at each stage, and why it’s important for the division of the chromosomes.
tightly connected, and the kinetochore, a pad of proteins found at the centromere.
Microtubules can bind to chromosomes at the kinetochore, a patch of protein found on the centromere of each sister chromatid. (Centromeres are the regions of DNA where the sister chromatids are most tightly connected.)
Microtubules that bind a chromosome are called kinetochore microtubules. Microtubules that don’t bind to kinetochores can grab on to microtubules from the opposite pole, stabilizing the spindle. More microtubules extend from each centrosome towards the edge of the cell, forming a structure called the aster.
Metaphase. Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of rate in the next step. If a chromosome is not properly aligned or attached, the cell will halt division until the problem is fixed.
Anaphase. The sister chromatids separate from one another and are pulled towards opposite poles of the cell. The microtubules that are not attached to chromosomes push the two poles of the spindle apart, while the kinetochore microtubules pull the chromosomes towards the poles.
Anaphase. The sister chromatids separate from one another and are pulled towards opposite poles of the cell. The microtubules that are not attached to chromosomes push the two poles of the spindle apart, while the kinetochore microtubules pull the chromosomes towards the poles.
In anaphase, the sister chromatids separate from each other and are pulled towards opposite ends of the cell.
The protein “glue” that holds the sister chromatids together is broken down, allowing them to separate. Each is now its own chromosome. The chromosomes of each pair are pulled towards opposite ends of the cell.
Microtubules not attached to chromosomes elongate and push apart, separating the poles and making the cell longer.
All of these processes are driven by motor proteins, molecular machines that can “walk” along microtubule tracks and carry a cargo. In mitosis, motor proteins carry chromosomes or other microtubules as they walk.
Telophase. The spindle disappears, a nuclear membrane re-forms around each set of chromosomes, and a nucleolus reappears in each new nucleus. The chromosomes also start to decondense.
Telophase. The spindle disappears, a nuclear membrane re-forms around each set of chromosomes, and a nucleolus reappears in each new nucleus. The chromosomes also start to decondense.
In telophase, the cell is nearly done dividing,
The chromosomes begin to decondense and return to
Here is your answer.
Mitosis has two types.
1) Karyokenesis
2) Cytokenesis
1)) Karyokenesis.
1) Prophase-
. During prophase, condensation of chromosomes starts. The thin and thread like chromosomes start thickening. They are seen with their pairs of sisters chromosomes.
2)Metaphase-
Chromosomes complete their condensation and each one is seen with its sister chromatids.The chromosomes are in equatorial plane of the cell.
3) Anaphase.
The centromeres of the chromosomes now divide forming two daughters chromosomes.The spindle fibres pull apart the chromosomes from equatorial region to the opposite poles.
4) Telophase-
Telophase is the reverse of events that occurred in prophase. The thickened chromosomes decondense. They again assume the thin thread like appearance.
2) Cytokenesis.
In animal cells and notch develops in the middle of the cell. This notch goes on deepening down and later the cytoplasm divide into two. In plant cells, the cells plate formation takes place and then cytokinesis take place.
Hope it helps you.