Mitosis vs. Meiosis The dividing of cells is an important bodily function for an organism to survive. The way our bodies work is very delicate and precise. Therefore the ways our body has to function to sustain life then must be handled in such ways there are two main ways cells divide in an organism; mitosis and meiosis. And they are similar in the way they divide cells, but they do have their differences First the big main difference between the two is that mitosis is for asexual reproduction and meiosis is used in the preparation for sexual reproduction. Mitosis creates body cells that are used so cells divide for things like growth and renewal of cells that die compared meiosis which makes the egg or sperm sex cell. Second, in mitosis the daughter cells contain diploid or two copies of each chromosome where in meiosis the daughter cells have haploids, which are only one copy of each chromosome. In addition, mitosis is a parental cell that divides once into two daughters cells with identical genetic information as the original compared to meiosis which divide twice resulting in four cells each containing only half the number of chromosomes, but each chromosome contains information from both parents making the cell unique. Lastly during the prophase phase in mitosis chromosomes condense, a spindle begins to form from the centrioles, the centrioles begin tom separate, and the nuclear envelope fragments. In meiosis it is very similar except the chromosomes attach to the membrane of the nucleus and pair up, which is called synapses, and cross over at points causing in the individuality of the daughter cells. Just like their differences, the two forms of cell division do have their similarities. First, both mitosis and meiosis go through the same main phases; interphase, prophase,
Title of Article: A mitosis mystery solved: How chromosomes align perfectly in a dividing cell
Source of the Article: Whitehead Institute for Biomedical Research
Date of the Article: February 12, 2012
20 Significant Ideas
1. The process of mitotic cell division has been studied intensely for more than 50 years.
2. Using fluorescence microscopy, today's scientists can see the tug-of-war cells undergo as they move through mitosis.
3. Thread-like proteins, called microtubules, extend…
Mitoses are a type of cell division whereby the chromosomes in a cells nucleus are separated into two identical sets of chromosomes each in its own nucleus. Mitoses usually results in two genetically identical daughter cells developing from a single parent cell, and is immediately followed by cytokinesis, which in turn divides the cytoplasm, organelles, cell membrane and karyokinesis. Mitosis is used by unicellular (an organism consisting of only one cell i.e., bacteria) organisms to reproduce;…
The process by which a cell divides to form two daughter cells, each of which contains
the same genetic material as the original cell and roughly half of its cytoplasm ?
a. Cell Division
b. Sexual Reproduction
c. Cell Cycle
2.) Any of the structures into which a chromosome divides during mitosis or meiosis?
3.) All body cells of an organism, apart from the sperm and egg cells the cells from which
they arise and undifferentiated stem cells ?
DNA replicates prior to cell division, so that chromosomes can be copied to give the same genetic code to every new diploid cell that is made. DNA replication occurs in a series of enzyme controlled reactions in which DNA is copied to produce two identical double stranded DNA molecules. Replication occurs in a series of steps controlled by enzymes with energy supplied as ATP.
1.An enzyme unwinds the DNA double helix by breaking the Hydrogen bonds between base pairs…
All new cells come from previously existing cells. New cells are formed by the process of cell division, which involves both division of the cell’s nucleus (called mitosis) and division of the cytoplasm (called cytokinesis).
Dividing cells experience both of these events along with a period of time between divisions called interphase. During interphase, the nucleus appears normal and the cell is performing its usual cellular functions. Also, the cell is increasing…
It is unlikely to find all of the structures within a cell because many of them do not happen all
in one phase. One example is the cleavage furrow. This only happens during telophase. Also,
these images are super small, and thus, may be difficult to located. In Both structures of the
cells, the 2n number is 4.
The purpose of mitosis, otherwise known as Cell or Nuclear division, is cell regeneration,
growth, and asexual reproduction,while the purpose of meiosis is the production of gametes
for sexual reproduction. Mitosis is a sing…
February 4, 2015
The Cell Cycle
1. Cell division is the process in reproduction and growth by which a cell divides to form daughter cells
2. Cell cycle is
3. Genome is the complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes
4. Chromosome is a threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins
5. Somatic cells is any cell in multicellular organism…
30 January 2014
Differences between Mitosis and Cell Division
Whereas mitosis is cell division, cell division is not mitosis. Cell division and reproduction can happen in two ways, either by mitosis or meiosis. Thus, each process is a type of cell division. In both processes, which have similar beginnings, the cells must replicate their DNA and create new cells. The DNA first breaks down and reorganizes into chromosomes, both undergoing prophases, metaphases, anaphases, and…
Section: Module 3: Cell Reproduction
Instructor: Jennifer Ott
The purpose of the cell reproduction laboratory is to explore the similarities and
differences between the cell cycle of normal cells and cancer cells. During the course of the
experiment, three types of tissues, lung, stomach and ovary, were observed. Normal and
cancerous cells were examined under a microscope and the phases of the cells were recorded in a
Meiosis is the process of cell division in sexually reproducing organisms that reduces the number of chromosomes in reproductive cells from diploid to haploid, leading to the production of gametes in animals and spores in plants. There are four stages of meiosis. The first is Prophase. Prophase is when homologous chromosomes form tetrads and cross over and mitotic spindle travels to opposite polls. The second stage…