Nuclear division at the DNA level Mitosis in a haploid cell Mitosis in a diploid cell Meiosis S Phase S Phase S Phase Chromatid Chromatid Chromatid formation formation formation Mitosis Mitosis Meiosis Alignment on equator Alignment on equator Pairing of homologs at equator (tetrad) AVAY Chromatid segregation Chromatid segregation Chromosome segregation End of first division and and A End of second division and and Daughter cells All A Daughter cells All Ala Sex cells FIGURE 2-11 DNA and gene transmission in mitosis and meiosis in eukaryotes. The S phase and the main stages of mitosis and meiosis are shown. Mitotic divisions (left and middle) conserve the genotype of the original cell. At the right, the two successive meiotic divisions that take place during the sexual stage of the life cycle have the net effect of halving the number of chromosomes. The alleles A and a of one gene are used to show how genotypes are transmitted in cell division.

Nuclear division at the DNA level Mitosis in a haploid cell Mitosis in a diploid cell Meiosis S Phase S Phase S Phase Chromatid Chromatid Chromatid formation formation formation Mitosis Mitosis Meiosis Alignment on equator Alignment on equator Pairing of homologs at equator (tetrad) AVAY Chromatid segregation Chromatid segregation Chromosome segregation End of first division and and A End of second division and and Daughter cells All A Daughter cells All Ala Sex cells FIGURE 2-11 DNA and gene transmission in mitosis and meiosis in eukaryotes. The S phase and the main stages of mitosis and meiosis are shown. Mitotic divisions (left and middle) conserve the genotype of the original cell. At the right, the two successive meiotic divisions that take place during the sexual stage of the life cycle have the net effect of halving the number of chromosomes. The alleles A and a of one gene are used to show how genotypes are transmitted in cell division.

Name: In Figure 2-11, assume (as in corn plants) that allele Aencodes an all
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: In Figure 2-11, assume (as in corn plants) that allele Aencodes an allele that produces starch in pollen and allele a does not. Iodine solution stains starch black. Howwould you demonstrate Mendel’s first law directly withsuch a system? Nuclear divis

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 1ACQ: Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids...

See similar textbooks

Similar questions

Describe the critical events of mitosis that are responsible for ensuring that each daughter cell receives a full set of chromosomes from the parent cell.
The sister chromatids separate ata) Prophaseb) Metaphasec) Telophased) Anaphase
Which of these is paired incorrectly?a. prometaphase—the kinetochores become attached tospindle fibersb. anaphase—daughter chromosomes migrate toward spindlepolesc. prophase—the nucleolus disappears and the nuclearenvelope disintegratesd. metaphase—the chromosomes are aligned in the metaphaseplatee. telophase—a resting phase between cell division cycles
What will be the outcome if anaphase proceeded even thoughthe sister chromatids were not properly attached to theirrespective microtubules and lined up at the metaphaseplate?
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?
Indicate the stage of mitosis (interphase = I, prophase = P, metaphase = M, anaphase = A, telophase = T) during which each of the following events occur. chromatid doublets separate to individual chromosomescentriole replicatesreplicated chromosomes (chromatid doublets) are arranged in single file next to one another at the cell's equatornuclear membrane is disappearingspindle fibers form and become visiblecell plate (plant) or cleavage furrow (animal) forms and is visiblechromosomes are at opposite poles of the cell; cytokinesis is almost completedchromosomes (chromatids) first become visible as long thin strandsDNA (chromosome) replication occurs
A diploid cell has 4C genetic material and 16 chromosomes at the start of cell division. Identify number of set/s of chromosomes per cell after mitosis, number of set/s of chromosomes at Telophase 1, and number of chromosomes per cell at Telophase 1.
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
The point in meiosis at which sister chromatids separate from each other isa. prophase I.b. metaphase I.c. anaphase I.d. anaphase II.e. telophase II
A diploid nucleus at early mitotic prophase has __________ set(s) of chromosomes; a diploid nucleus at mitotic telophase has __________ set(s) of chromosomes. (a) 1; 1 (b) 1; 2 (c) 2; 2 (d) 2; 1 (e) not enough information hasbeen given
Somatic cells of chimpanzees contain 48 chromosomes.How many chromatids and chromosomes are present at: (a) anaphase of mitosis, (b) anaphase I ofmeiosis, (c) anaphase II of meiosis, (d) G1 priorto mitosis, (e) G2 prior to mitosis, (f) G1 prior tomeiosis I, and (g) prophase of meiosis I?How many chromatids or chromosomes are presentin: (h) an oogonial cell prior to S phase, (i) a spermatid, (j) a primary oocyte arrested prior to ovulation,(k) a secondary oocyte arrested prior to fertilization,(l) a second polar body, and (m) a chimpanzee sperm?
Separation of the sister chromatids is a characteristic of which stage of mitosis?a. prometaphaseb. metaphasec. anaphased. telophase