If an organism is 2n=12, How many chromatids are present in prophase of mitosis? 1. 6 How many bivalents form in metaphase of meiosis I? 2. 12 How many chromosomes are at each pole telophase of meiosis II? 3. 24 4. other How many chromosomes are at each pole in telophase of mitosis? > > > >

If an organism is 2n=12, How many chromatids are present in prophase of mitosis? 1. 6 How many bivalents form in metaphase of meiosis I? 2. 12 How many chromosomes are at each pole telophase of meiosis II? 3. 24 4. other How many chromosomes are at each pole in telophase of mitosis? > > > >

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:

Question

If an organism is 2n=12,
How many chromatids
are present in prophase
of mitosis?
1. 6
How many bivalents form
in metaphase of meiosis
I?
2. 12
How many chromosomes
are at each pole
telophase of meiosis II?
3. 24
4. other
How many chromosomes
are at each pole in
telophase of mitosis?

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Match the phase of cell division with the following diagrams. In these cells, 2n = 4. a. anaphase of meiosis I b. interphase of mitosis c. metaphase of mitosis d. metaphase of meiosis I e. metaphase of meiosis II
At which stage of meiosis are sister chromatids separated from each other? a. prophase I b. prophase ll c. anaphase I d. anaphase ll
Compare meiotic anaphase I with meiotic anaphase II. Which meiotic anaphase is most similar to the mitotic anaphase?
Figure 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.
How does the attachment of kinetochore microtubules to thekinetochore differ in metaphase of meiosis I compared tometaphase of mitosis? Discuss what you think would happenif a sister chromatid was not attached to a kinetochoremicrotubule
Which type(s) of cell division (mitosis, meiosis I,meiosis II) reduce(s) the chromosome number byhalf? Which type(s) of cell division can be classifiedas reductional? Which type(s) of cell division can beclassified as equational?
A diploid species has four chromosomes per set for a total of eightchromosomes in its somatic cells. Draw such a cell as it wouldlook in late prophase of meiosis II and prophase of mitosis. Discuss how prophase of meiosis II and prophase of mitosis differfrom each other, and explain how the difference originates.
If a diploid organism has 14 chromosomes (2n=14) a. How many chromosomes will its gametes have? b. After meiosis I during gamete formation, how many chromosomes are in each daughter cell? c. After meiosis I during gamete formation, how many chromatids are in each daughter cell?
If a diploid cell contains six chromosomes (i.e., three per set), howmany possible random arrangements of homologs could occur during metaphase of meiosis I?
What would be the number of chromosomes and chromatids for a cell (2n=4) in each phase (S-phase, Prophase, Metaphase, Anaphase and Telophase/Cytokinesis) of Meiosis I and II?
How many chromosomesdoes a human normal haploidcell have? How many chromosomes does a human normal diploid cell have? How many are the sexchromosomes within each ofthem?
in the experiment of following chromosomal dna mvement througgh meiosis, why. do you use non-sister chromatids to demobstrate crossing over? what combinatiobns of alleles could result from a crossover between BD and bd chromosomes? Identify two ways that meiosis contributes to genetic recombination. Why is it necessary to reduce the number of chromosomes in gametes, but not in other cell?