Mitosis Research Paper

A new nuclear envelope forms around the separated sister chromosomes. As mitosis completes, cytokinesis is well underway.

Mitosis is a cellular process that replicates chromosomes and produces two identical nuclei in preparation for cell division, from the original cell two cells are derived, each of which possesses the same genetic material. Mitosis has five phases: interphase, prophase, metaphase, anaphase and telophase. Interphase The DNA duplicates during interphase to prepare for mitosis. Chromosomes are not clearly discerned in the nucleus. Prophase Chromatin in the nucleus begins to condense and becomes visible in the light microscope as chromosomes. The nuclear membrane dissolves. Microtubules attach at the kinetochores and the chromosomes begin moving. Metaphase Spindle fibers align the chromosomes along the middle of the cell nucleus. This line is

Without cell division and the cell cycle nearly all life would fail to exist. Cell division allows an organism to not only replace its own cells but to create offspring. The cell cycle consists of two main parts: interphase and mitotic phase. Within these two phases the processes can be broken down into further categories. Interphase can be broken down into three subphases that are the necessary preparations the cell makes in order to be ready to divide during mitosis. For this lab we looked mainly at the mitotic phase because of its fascinating and rapid changes to the cell. The cell types we looked at were prepared slides of whitefish and onion root tip.

The phase proceeding metaphase in which chromosomes aligned at the metaphase plate split into two sister chromatids and are pulled to opposite sides of the cell by the mitotic spindle.

Mitosis is one of two main methods of cell replication, the other being meiosis. It is “the simple duplication of a cell and all of its parts” resulting from the splitting of a cell. The ‘parent’ or original cell splits, duplicating its DNA (packaged in chromosomes) producing two ‘daughter’ or new cells with the same genetic code. There are four stages of mitosis; Prophase, Metaphase, Anaphase and Telophase. Interphase is not an official phase of mitosis as the cell is at ‘rest’ and not being divided during this phase. It is often called one of the phases of mitosis as it is one of the stages in the life cycle of a cell; however it is not a phase of mitosis due to the fact that no division takes place.

Cell division may happen by either mitosis or meiosis, depending on what type of cell is invovled. Mitosis is a process by which a cell divides to form two daughter cells. They each have the same exact number and kind of chromosomes as the parent cell. Meiosis occurs in the primary sex cells leading to the formation of viable egg and sperm cells. They reduce the number of chromosomes to half in each gamete so that when they are getting furtilized, the species chromosome number is kept even.

Which of the following are features of mitosis? Select all that apply. Answers: Reduces the number of chromosomes to half

In genetics, the way people retrieve their genes and traits is through cell division; mitosis and meiosis. Mitosis in cell division is the process in making body cells. There are 7 stages in mitosis; interphase, prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. In interphase, the cell is growing normally and synthesizes with organelles. In prophase, changes occur in the cell and parts of the structures begin to break down, setting the stage for chromosome division. Prometaphase is the stage where the chromosomes are sorted and made very compact, and metaphase is when the chromatids of each chromosome are attached to a microtube to form a spindle. Anaphase it the process in which the chromosomes split, leading into telophase, which is where the chromatids travel to opposite poles in a cell and new membranes form around the nuclei. The final stage in mitosis, cytokinesis, is when the chromatids split in two.

a. GI – A cell and its organelles double in size. It’s a growth phase.

This division of the nucleus is called mitosis. Another part of cell division is cytokinesis, where the cytoplasm divides and the cell becomes two cells. The first steps in cell division begin with mitosis, and mitosis is divided into five different stages which include: prophase, prometaphase, metaphase, anaphase, and telophase. (pg. 571) Prophase is the first step in mitosis. During prophase the chromosomes become compact together. The centrisomes begin to form the mitotic spindle. Prometaphase is the next step in cell division, which the nuclear envelope breaks apart and the paired chromatids connect. (pg. 572) Then the chromatids connect with spindle microtubules to form kinetochores and migrate to the poles of the cell. In metaphase the chromosomes line up in the middle of the cell. (pg. 573) The next step in mitosis is anaphase, which is where the chromatids of each chromosome separate at the centromere and are pulled to opposite ends. The last step in mitosis is telophase. During telophase the spindle fibers disassembled and the chromosomes uncoil into chromatin. At this point the cell enters into cytokinesis. (pg. 574) During cytokinesis the cytoplasm splits along the cleavage furrow. (pg 578) In plant cells, during cytokinesis a cell wall must be formed. Vesicles migrate toward the center and form a cell plate, which becomes the cell wall. (pg.580) In either a plant cell or animal cell, at this

18) During which phase of mitosis do the chromosomes line up on a plane equidistant from the two spindle poles? A) anaphase B) metaphase C) telophase D) prophase 19) At the start of mitotic anaphase, A) the chromatid DNA replicates. B) the centromeres of each chromosome come apart. C) nuclear envelopes begin to form around the chromosomes. D) equivalent and complete collections of chromosomes have reached the two poles.

Cell proliferation is defined as an increased in the cell population. Proliferation is important when observing normal cell growth. The cells grow and divide into identical cells using the cell cycle and this process is known as cell division. There are two phases of cell division which are interphase and mitosis. Interphase has three main phases and each phase has a different process and function. These three parts are known as G1, S, and G2. In the G1 phase cell growth is initiated and it is also the phase that is responsible for protein synthesis and ribonucleic acid production (a ). The next phase is the S phase which is also known as the synthesis phase and it is where the DNA is replicated. Final step of the interphase is the G2 phase which deals with cell growth and prepares for cell division. Mitosis is the process that come after all the phases of

We also learned about mitosis is divided into five phases prophase, prometaphase, metaphase, anaphase and telophase. There are many diffrence between the two articles.

Prophase: This is the first phase in the Cell Cycle. Chromosomes become more coiled and can be seen through a light microscope. The nucleolus disappears during Prophase and inside the cytoplasm spindle fibers form, migrating to opposite poles of the cell. Picture URL: http://www.phschool.com/science/biology_place/labbench/lab3/images/prophase.gif

The purpose of mitosis is to create or produce more cells for a living organism. Mitosis occurs when genetic substance in the nucleus divides or separates in order to create more cells. Cytokinesis normally occurs next and the single cell develops into two separate cells. This same process continues to occur over and over creating more cells for an organism replacing old or dead cells.