Mitosis is easily observed in cells that are growing at a rapid pace such as whitefish blastula or onion root tips, which was used in this lab experiment. The root tips contain and area called the apical meristem that has the highest percentage of cells undergoing mitosis. The whitefish blastula is formed directly after the egg is fertilized. This is a period of rapid growth and numerous cellular divisions where mitosis can be observed. In mitosis the cell is in interphase, and have a distinct nucleus and nucleoli where the thin threads of chromatin thicken into distinct chromosomes and the nuclear evvelope breaks open releasing them into the cytoplasm. The firs signs of the spindle begin to appear, next the cell begins metaphase, where the spindle attaches to the Centromere of each chromosome and moves them to the same level in the middle of the cell. This level position is called the metaphase plate. Anaphase begins when the chromatids are separated and pulled to opposite poles, then the final stage is telophase. The nuclear envelope is reformed and the chromosomes gradually uncoil. Cytokinesis may occur, in which, a cleavage furrow will form and the two daughter cells will separate. Meiosis is more complex and involves two nuclear divisions. The…
* Meiosis – cell division for gamete production * In specialized tissues * Produces cells with the 1n chromosome number * Two Divisions * Meiosis I separates homologous chromosomes * Meiosis II separates sister chromisis * Asexual Reproduction * Mitotic division * Identical offspring * Sexual Reproduction * Fuse gametes from parents (syngamy) to produce a zygote *…
5) Mitosis and meiosis are alike in the respect that go through most of the same phases, and are used for reproduction purposes. However, meiosis results in sexual reproduction, in order to create multicellular organisms, occurring in only animals, humans, fungi, and plants, whereas mitosis occurs in all organisms. Mitosis only goes through one division, has the same number of chromosomes, and creates only two diploid cells. Meiosis undergoes two divisions, the creation of four haploid cells, and half reduces the chromosomes.…
Mitosis and meiosis are important, because mitosis is a type of sexual reproduction which enables a cell to reproduce two new genetically identical daughter cells from a single parent cell (Pruitt and Underwood, 2006). During this process mitosis has the function of permitting cells to replace ones that are worn out, damaged, or need to be replicated for single cells organism. Where mitosis is asexual cellular reproduction, meiosis not only multiplying the numbers of cells by cell division, but it reduces the number of chromosomes in each daughter cell to one-half of the number before meiosis (Pruitt and Underwood, 2006). Meiosis also permits chromosomes of more complex organisms to be passed down from parent cells to daughter cells for genetic diversity.…
Response Feedback: Meiosis occurs only in replicating gametes or reproducing cells. In phase one, the number of chromosomes is reduced by half but the chromatid pairs remain together. In phase two, the chromatids split apart forming four daughter cells. Non-germ cells such as red blood cells or skin cells undergo mitosis.For more information on this topic, consult:Carol Mattson Porth and Glen Matfin, Pathophysiology, 8th Edition, page(s) 122-123, 123fCarol Mattson Porth, Essentials of Pathophysiology, 2nd Edition, page(s) 52-53, 53f Elizabeth J. Corwin, Handbook of Pathophysiology, 3rd Edition, page(s) 15-16Pathophysiology Made Incredibly Easy, 4th Edition, page(s) 436Anatomy and Physiology Made Incredibly Visual, page(s) 11Animation(s) Cell Cycle…
A: Mitosis is not for sex cells. Mitosis also uses RNA to replicate the DNA and divide. Meiosis is for sex cells (sperm and egg) and doesn't use RNA to replicate. They are similar in that they are the two main ways that cells divide to form more cells. Mitosis provides four cells and meiosis provides two cells.…
1. Meiosis is similar to mitosis, except that it involves two divisions, meiosis I and meiosis II, and the resulting cells are haploid, rather than diploid like those produced by mitosis.…
Cell division is the process of a parent cell dividing into two daughter cells. Mitosis is a type of cell division. In mitosis a parent cells chromosomes are copied and separated into two cells with different nucleuses but same DNA. There are steps or phases that take place that make the cell divide. The first phase is called Interphase. In interphase there are sub groups such as gap 1, 2 and synthesis, also known as S. In gap 1 protein synthesis occurs and the cell grows and may double in size. In S stage DNA of the parent cells are copied, and the long loose fibers are called chromatin. Basically in…
2. In 2-4 sentences compare and contrast mitosis and meiosis including the steps, purpose and products. Mitosis and meiosis are types of nuclear division that make different types of cells. Mitosis makes diploid cells that are genetically identical. It takes place throughout an organism’s lifetime and is involved in asexual reproduction. During meiosis, diploid cells undergo 2 cell divisions that result in 4 haploid cells. Meiosis occurs in sex cells, produces gametes, increases genetic diversity and produces genetically unique cells. It takes place only at certain times in an organism’s life cycle and is involved in sexual reproduction.…
Mitosis is the process by which the nucleus of the cell is divided into two nuclei, each with the same number and kinds of chromosomes as the parent cell.…
DNA must replicate before mitosis or meiosis can occur. If daughter cells are to receive a full set of genetic information, a duplicate copy of DNA must be available. Before DNA replication occurs, each chromosome consists of a single long strand of DNA called a chromatid. When a diploid cell undergoes meiosis, four unique haploid daughter cells are produced. It is important for gametes to be haploid…
Living organisms need cell division in order to grow and reproduce. Mitosis and meiosis are two types of cell division. Mitosis occurs in vegetation cells, while meiosis occurs in reproductive cells of animals. In mitosis, a parent cell divides into two identical daughter cells that are the same as the parent cell. Meiosis produces four daughter cells that contain half of the genetic information of the parent cell. Because meiosis produces cells with only one half the genetic information as the parent cell, it’s known as reduction division.…
Meiosis, on the other hand, is a process of taking a diploid cell (a cell with the full number of chromosomes) and producing haploid gametes…
Mitosis is a type of cell division that produces two genteically identical cells from a single cell. Mitosis is basically a process that cells goes through to to form two new nuclei, with each nuclei containing the same number of chromosomes. Mitosis is used by…
Mitosis occurs in all eukaryotic cell tissues and produces genetically identical daughter cells with a complete set of chromosomes. In humans, mitosis produces somatic cells that are diploid, which means they contain two non-identical copies of each of the twenty-three chromosomes. One copy is derived from the person's mother and the other from the person's father.…