Concept explainers
To determine: The proper chromosomal constitution of a cell.
Introduction: Chromosome is a part of DNA that contains all genetic information. The chromosome is consisting of a packaging protein that binds with condense DNA molecules to prevent from the unmanageable problem.
Explanation of Solution
Cell division is an important event in which the division of parental cells leads to the two or more daughter cells. The cell division is taken place by mitosis and meiosis. Mitosis involves a single nuclear division after
Whereas, meiosis involves two nuclear division without DNA replication and produces four daughter cells. Every daughter cells contain half of the original number of chromosomes because crossing over takes place in the prophase I of meiosis.
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Chapter 11 Solutions
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- Subject (Developmental Biology) Question: Consider a human zygote. How many cells will be there after 4th round of cell division? Before 16th round?arrow_forwardLearning Task 2: Directions: Identify if the statement is Mitosis or Meiosis. 11. 12. 13. 14. attach to the chromatids at the centromere and pull apart the chromatids. 15. is a continuous process of cell division which occurs in all types of living cells. involves four basic phases - prophase, metaphase, anaphase and telophase. in humans, this means the chromosome number is reduced from 46 to 23. In _the nuclear membrane is broken down, spindle fibers (microtubules) each nucleus is identical to the original nucleus as it was in G1.arrow_forwardLearning Task 2: Directions: Identify if the statement is Mitosis or Meiosis. the form of nuclear cell division that results in daughter cells that have one half the 16. chromosome numbers as the original cell. 17. cell gets one complete set of chromosomes, i.e., one of each homologous pair of chromosomes. 18. 19. 20. chromosomes to 46. In organisms that are diploid, the end result is cells that are haploid. Each daughter is the process where the division of cell occurs by asexual reproduction. Lis the only cells that undergo. The joining together of a sperm and egg during fertilization returns the number of the will become sperm or eggs.arrow_forward
- Lab 11- Mitosis & Meiosis If provided microscope images of plant cells, can you determine if they are in Interphase and/or identify the particular Mitosis stage (Pro, Prometa, Meta, Ana, Telo)? If provided meiosis beads (like what we used in lab), can you look at how they are arranged and determine what meiosis stage is being represented (the stage name and if it's from Meiosis-l or Meiosis-II)?arrow_forwardquiz. Question 1 Two divisions Mitosis O Meiosis Both mitosis and meiosisarrow_forwardFigure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the initotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.arrow_forward
- Directions : Determine whether the following characteristics apply to mitosis, meiosis, or both, by putting into appropriate column.1. No crossing over of chromatid arms.2. Two divisions of the nucleus.3. Four daughter cells produced.4. Associated with growth, development, and asexual reproduction.5. Associated with sexual reproduction.6. One division of the nucleus7. Two daughter cells produced.8. Involves duplication of chromosomes during interphase.9. Chromosome number remains the same.10. Chromosome number is halved.11. Crossing over between chromatid arms may occur.12. Daughter cells are identical to parent cell.13. Daughter cells are not identical to parent cell.14. Produces sex cells. (egg and sperm cells)15. Happens in plant and animal cells.16. Type of cell division.17. Parent cell has 46 chromosomes (in human)18. Daughter cell has 23 chromosomes (in human)19. Daughter cell has 46 chromosomes (in human)20. Produces body cells. (Skin, bone, nerve, etc.)arrow_forwardWire Models for Cell Division 1. Mitosis Label the chromosomes at metaphase. Identify the types of chromosomes in the genome. Give the chromosome number (in proper format) and chromosome composition of the cell.arrow_forwardPOST-LAB ACTIVITY 1. How does cytokinesis differ between plant cells and animal cells? Explain in a short paragraph. You can use the Internet or your lecture text to research the answer to this question. e lo v 2. What is the advantage of reproducing by meiosis (sexual reproduction) versus mitosis (asexual reproduction to produce offspring, which are clones of the parent cell)? How does crossing over and the fusion of haploid gametes contribute to the genetic hardiness of species? Use your textbook and the Internet to answer the question. 128 Mitosis and Meiosisarrow_forward
- Part II. Direction: Arrange the order of events of the cell cycle by writing no 1-8. 1. The cell replicates the genetic material. 2. The chromosomes align at the equatorial plate. 3. The two new cells separate through cytokinesis. 4. The cell increases in size and cellular contents duplicates. 5. The sister chromatids move apart towards the opposite poles. 6. The nuclear membrane begins to reform, and spindle fiber disappear. 7. The cell ensures that all of the chromosomes have been replicated and not damaged. _8. The nucleolus disintegrates and spindle fibers appear and begin to attach to the chromosomes.arrow_forwardCell Cycle: Mitosis The Cell Cycle and M Mitosis Worksheet The diagram below shows six cells in various phases of the cell cvcle. Note the cells are not arranged in the order in which mitosis occurs . Use the diagram to answer questions 1-5 Phases of the Cell Cycle A B How can you tell which diagram(s) is/are the end of the cell division? What are structures seen inside the nucleus? Are the cells depicted plant or animal cells? Explain your answer. 4. Use the diagram, at the bottom of your answer sheet, draw the phases/ stages of the cell cycle and arrange them in a correct sequence. 5. Why is mitosis important? Give at least 2 reasons. 37:09 / 38:01 5224arrow_forwardx * X Given the cell shown here, answer the following three questions. 1. Describe the ploidy and total chromosome count of this cell without using any words. 2. What checkpoint in the cell cycle will allow this cell to move to the next phase? 3. What will be the ploidy of the two resulting daughter cells? 4. If non-disjunction occurred in one of the chromosomes shown here, what would be the ploidy of each of the resulting daughter cells?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College