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?

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?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter2: Cells And Cell Division

Section: Chapter Questions

Problem 22QP: Match the phase of cell division with the following diagrams. In these cells, 2n = 4. a. anaphase of...

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Concept explainers

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:

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Match the phases of meiosis with the correct description Metaphase I [ Choose ] [Choose ] Sister chromatids line up along the center of the cell. Cytokinesis produces four unique daughter cells, spindle dissolve, and the nuclear envelope reappears. Spindle fibers pull homologous pairs of chromosomes apart. Nuclear envelopes of daughter cells dissolve, and chromosomes condense. Spindle fibers pull sister chromatids apart. Homologous pairs of chromosomes line up at the center of the cell in tetrads. Cytokinesis produces two daughter cells, spindle dissolves, and nuclear envelope reappears. Nuclear envelope dissolves, DNA condenses and crossing over occurs. Anaphase II Prophase I Telophase I [Choose ] Prophase II [ Choose ] Telophase II [ Choose ] Anaphase I [ Choose ] Metaphase II [ Choose ] > > >
The following pairs of term differentiate mitosis from meiosis. Describe the pair of terms briefly. 1. Somatic cells vs. sex cells 2. Haploid cells vs. Diploid cells 3. Homologous chromosomes vs. Sister chromatids 4. Daughter cells vs. 2 daughter cells 5. 2n = 6 vs n = 3
Speculate about the following details of mitosis. 1. Why do chromosomes need to condense during mitosis? 2. Why does the nuclear membrane need to break down at the beginning of prometaphase? 3. Why do chromosomes congress (migrate) toward the metaphase plate during metaphase, and what forces keep the chromosomes there until anaphase begins? 4. What would happen if one kinetochore of one chromosome failed to attach to the spindle and the cell entered anaphase? In a general sense, how do cells normally prevent this situation? 5. During late anaphase and telophase, animal cells elongate to aid the eventual separation of the two daughter cells in cytokinesis. This elongation can occur even in cell suspensions, where different cells do not come into contact. Are the forces that elongate the cell likely to be pushing forces or pulling forces, and where do these forces come from?
Which statements are true for mitosis? Group of answer choices (pick all that apply) 1. produces identical daughter cells 2. involved in sexual reproduction 3. reduces the number of chromosomes 4. involved in general growth and repair or asexual reproduction 5. produces cells that are almost always genetically different 6. produces diploid somatic cells 7. produces haploid gametes
List down at least 4 differences between Mitosis and Meiosis 2. With a simple sketch, using colored pens provide an illustration (with label) of the cell that will show the comparison of: 1. Anaphase 1 and Anaphase 2 2. Metaphase 1 and Metaphase 2
Which statements are true for mitosis? Select all that apply: 1. produces identical daughter cells 2. involved in sexual reproduction 3. reduces the number of chromosomes 4. involved in general growth and repair or asexual reproduction 5. produces cells that are almost always genetically different 6. produces diploid somatic cells 7. produces haploid gametes
please explain this in a length of a full page as much detail please 1.What are the primary functions of cell division (Mitosis) as compared to Meiosis, how are the daughter cells produced in each process different?
In Coleus , the somatic cells are diploid with 24 chromosomes. How many of each of the following is present in each cell at the stage of mitosis and meiosis indicated below? kinetochore at prophase chromosomes at anaphase chromatids at metaphase 1 chromosomes at telophase after cytokinesis centromeres at anaphase chromosomes at telophase II after cytokinesis centromere at anaphase I chromatids at metaphase
a. What type of cell division mitosis, meiosis I or meiosis II is shown in this figure? b. What is the diploid number of this organism? c. Provide labels for (i) and (ii)
Mitosis Meiosis Definition Prophase Metaphase Anaphase Telophase Prophase I Metaphase I Anaphase I Telophase I Prophase II Metaphase II Anaphase II Telophase II Steps of each phase Number of cell divisions Number of cells produced *How many chromosomes per 46 daughter cell? * Mitosis starts with 46 chromosomes in each parent cell, and then ends with 46 chromosomes in each daughter cell. Cells divide onl once in Mitosis, but they divide twice during Meiosis, so we should end with half as many chromosomes in Meiosis vs Mitosis.
PLEASE ANSWER THE FOLLOWING QUESTIONS: 1. In figure 1 locate the mitotic zone or region of cell division. Next, identify mitotic stages visible in figure 2. Note down visible structural changes occurring at various stages of mitosis, namely: prophase (early and late) metaphase, anaphase (early and late) and telophase (early and late). 2. Point the specific mitotic stages that can be seen in the enlarged image of onion root tip cells undergoing cell division (figure 2). 3. Search for a diagrammatic illustration of the different stages of meiosis, examine/study carefully the changes occurring in each stage. Note how these stages assemble or differ from those of mitosis. 4. Then, summarize the structural changes occurring in each stage of mitosis and meiosis in a tabular form.
Consider a diploid organism with 18 chromosomes. Answer each question on a per cell basis. How many chromosomes are there during metaphase? How many functional centromeres are there during anaphase? How many chromosomes are there during telophase I after cytokinesis? How many chromosomes are there during prophase II? How many chromatids are there in anaphase II? How many kinds of chromosomes are there?