To determine:
The mechanism of meiosis that results in haploid gametes production.
Introduction:
Meiosis is a type of cell division that causes the formation of gametes. In this process, the number of chromosomes is decreased into half of the initial chromosome number, which makes up the haploid gametes.
Explanation of Solution
An animal is multicellular organism and contains a diploid number of chromosomes, which is each parent cell contains a diploid number of chromosomes. In order to produce haploid gametes, the division of cell should be in such a manner that half of the number of chromosome or each copy of a chromosome is present in daughter cell.
The meiosis is divided in two phases, meiosis I and meiosis II. The Meiosis I is the reductional division and in the metaphase I of meiosis I, the sister chromatids containing identical genes are separated, which result in formation of the haploid cells.
So, the parent cell which contains a diploid number of chromosomes undergoes meiosis that is reduction division. This results in gamete production which is haploid in nature containing half number of chromosomes to that of the parent chromosome.
Both male and female produce gametes haploid gametes. Only gamete production stage in animals is the phase which is haploid in nature. Now, when male and female gametes fuse they again produce a diploid zygote.
By reductional division durinng meiosis I, haploid gametes are produced containing half number of parent chromosome.
Want to see more full solutions like this?
Chapter 22 Solutions
INQUIRY INTO LIFE (VALUE ED)
- Which of the following is not true about the life-cycle of Fucus. a. 8 eggs per oogonium b. 64 sperm per antheridium c. eggs are flagellated d. sperm are flagellatedarrow_forwardGreen Algae, as a group, is actually paraphyletic with one subgroup more closely related to higher plants than the other. Which of the following green algae groups is more closely related to higher plants: a. Charophyceans b. Chlorophyceans c. Rhodophyta d. Xanthophyceansarrow_forwardCertain toxic terpenoids in this group is thought to deter herbivory but may also have some anti-tumor activity? a. green algae b. brown algae c. red algae d. golden algae e. none of thesearrow_forward
- In the cellular slime molds, the most common phase is: a. plasmodium b. pseudoplasmodial c. single cells as myxamoebae d. moundingarrow_forwardWhich of the following descriptive terms does not describe Hydrodictyon? a. colonial b. nonmotile c. 1 large reticulated chloroplast in each cell d. all of these describe Hydrodictyonarrow_forwardWhich of the following does not apply to Chara? a. "stoneworts" b. isogamous c. calcified walls d. apical growth with an axis and branchesarrow_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