
Concept explainers
To explain: The reasons why the organisms do not utilize the first steps of meiosis for the normal mitotic division of somatic cells.
Introduction: Cell division is the process where the cells divide to produce two or more daughter cells. There are mainly two types of cell division- Mitosis and Meiosis. Mitosis involves the division of a single cell into two identical daughter cells. Meiosis involves the production of the sex cells-sperms and eggs. This process involves the division of a single cell twice to produce four daughter cells which exactly contains half of the original chromosomes numbers. There are two phases of meiosis- meiosis I and meiosis II.

Explanation of Solution
In meiosis I, there will be separation of the homologous pairs through the first round of the cell division which can produce one diploid cell and in meiosis II, there will be separation of the sister chromatids during the second round of the cell division. Hence, they can produce four haploid daughter cells whereas the mitosis involves the division of a single cell into two diploid daughter cells.
Somatic cells will have diploid number of chromosomes and it is necessary that the essential number of chromosomes to be present in the cell for its normal functioning. Abnormal number of chromosomes will result in cancerous cells or cell death. The genes required for the normal functioning of the cell is evenly distributed amongst the diploid number of chromosomes.
At the end of synthesis phase, the
Want to see more full solutions like this?
Chapter 19 Solutions
Essential Cell Biology 5e
- 22. Which of the following mutant proteins is expected to have a dominant negative effect when over- expressed in normal cells? a. mutant PI3-kinase that lacks the SH2 domain but retains the kinase function b. mutant Grb2 protein that cannot bind to RTK c. mutant RTK that lacks the extracellular domain d. mutant PDK that has the PH domain but lost the kinase function e. all of the abovearrow_forwardWhat is the label ?arrow_forwardCan you described the image? Can you explain the question as well their answer and how to get to an answer to an problem like this?arrow_forward
- Describe the principle of homeostasis.arrow_forwardExplain how the hormones of the glands listed below travel around the body to target organs and tissues : Pituitary gland Hypothalamus Thyroid Parathyroid Adrenal Pineal Pancreas(islets of langerhans) Gonads (testes and ovaries) Placentaarrow_forwardWhat are the functions of the hormones produced in the glands listed below: Pituitary gland Hypothalamus Thyroid Parathyroid Adrenal Pineal Pancreas(islets of langerhans) Gonads (testes and ovaries) Placentaarrow_forward
- Describe the hormones produced in the glands listed below: Pituitary gland Hypothalamus Thyroid Parathyroid Adrenal Pineal Pancreas(islets of langerhans) Gonads (testes and ovaries) Placentaarrow_forwardPlease help me calculate drug dosage from the following information: Patient weight: 35 pounds, so 15.9 kilograms (got this by dividing 35 pounds by 2.2 kilograms) Drug dose: 0.05mg/kg Drug concentration: 2mg/mLarrow_forwardA 25-year-old woman presents to the emergency department with a 2-day history of fever, chills, severe headache, and confusion. She recently returned from a trip to sub-Saharan Africa, where she did not take malaria prophylaxis. On examination, she is febrile (39.8°C/103.6°F) and hypotensive. Laboratory studies reveal hemoglobin of 8.0 g/dL, platelet count of 50,000/μL, and evidence of hemoglobinuria. A peripheral blood smear shows ring forms and banana-shaped gametocytes. Which of the following Plasmodium species is most likely responsible for her severe symptoms? A. Plasmodium vivax B. Plasmodium ovale C. Plasmodium malariae D. Plasmodium falciparumarrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education





