Answered: Give the genetic content © and…

Give the genetic content © and chromosome number (n) of a diploid cell during the following phases: a. G1 b. S-phase c. G2 d. metaphase e. anaphase f. telophase after cytokinesis

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter6: Reproduction At The Cellular Level

Section: Chapter Questions

Problem 5RQ: Separation of the sister chromatids is a characteristic of which stage of mitosis? a. prometaphase...

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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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Give the genetic content © and chromosome number (n) of a diploid cell during the following phases: a. G1 b. S-phase c. G2 d. metaphase e. anaphase f. telophase after cytokinesis

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Separation of the sister chromatids is a characteristic of which stage of mitosis? a. prometaphase b. metaphase c. anaphase d. telophase
Using the symbols above: 1. Given: Adult diploid cell (2n = 8) 2. Show the condition of the chromosomes in the following Mitosis phases (illustrate): a. prophase b. metaphase c. anaphase d. telophase/cytokinesis
1) List and briefly describe three major cell cycle checkpoints. For each checkpoint,predict the consequences if the checkpoint fails to work properly. 2) Explain why mitosis does not produce genetic variation and how meiosis leads to the production of tremendous genetic variation.
Which of the following statements are true (Select all that apply) A. The nuclear envelope dissolves in the metaphase and reforms in telophase B. In prophase, chromosomes condense into compact structures C. The spindle forms and attaches to chromosomes in prometaphase D. In anaphase, each sister chromatid moves toward the spindle pole to which it is attached.
Describe the role of the following structures or proteins in cell division: a. microtubules b. cohesin protein c. kinetochores d. synaptonemal complex
CRITERIA MITOSIS MEIOSIS a. chrosomosomes number of daughter cells b. number of cell divisions c. stages d. Presence of synapses e. presence of crossing over f. cell type that undergoes cell division g. number of daughter cells formed h. DNA content of cells at start of division i. DNA content of daughter cells j. genetic consequences
For the following events, specify whether they occur during mitosis, meiosis I, or meiosis II:A. Separation of conjoined chromatids within a pair of sisterchromatidsB. Pairing of homologous chromosomesC. Alignment of chromatids along the metaphase plateD. Attachment of sister chromatids to both poles
Which of the following is a correct statement during life cycle events in a cell? A. chromatids seperate during S phase B. chromatids seperate during Meiosis II C. chromatids seperate during cytokinesis D. chromatids seperate during Meiosis I
Match the following events with the stages in mitosis: chromosomal materials condenses to form compact chromosomes. alignment of chromosomes along the equator or plate with microtubules attached to poles sister chromatids for each chromosome split and move to opposite poles chromosomes are clustered at each of the poles and give way to cytokinesis A. telophase B. anaphase C. metaphase D. prophase
which of the following events occurs during anaphase B in a mitotic cell a. lengthening of the overlap microtubules b. Shortening of the overlap microtubules c. Shortening of the overlap microtublues d. Shortening of the astral microtubules e. Lengthening of the kinetochore microtubules
which of the following is not true about mitosis? a.) chromosomes line up in metaphase by connecting to kinetechore proteins b.) the process starts out as a diploid cell c.) dna replicates in M phase d.) cells can be 4n if cytokenisis does not occur at the end
Which of the following statements is TRUE of interkinesis? It is relatively brief interphase between telophase I and prophase II. Chromosomes duplicate during interkinesis DNA undergoes semiconservative replication during this interphase. In all species, chromosomes usually decondensed during this time The following are haploid cells, EXCEPT: A. Spermatids and spermatozoa C. Ovum and second polar body B. Primary oocytes and primary spermatocytes D. Secondary oocytes and first polar body Which of the following statements is INCORRECT? By six months after conception, fetal ovaries contain about half a million primary oocytes arrested in the diplotene stage. At ovulation, a released primary oocyte completes meiosis I and proceeds as far as metaphase II. Fertilization quickly completes meiosis II. Only two of the three products of a single meiosis serve as the female gametes.