omatids present. Be sure to differentiate homologous chromosomes by using size, shape, ber labeling mechanism. etaphase of mitosis ( omologous pairs hromosomes hromatids aphase of meiosis I- draw and count chromosomes for only 1 cell ( omologous pairs hromosomes hromatids

omatids present. Be sure to differentiate homologous chromosomes by using size, shape, ber labeling mechanism. etaphase of mitosis ( omologous pairs hromosomes hromatids aphase of meiosis I- draw and count chromosomes for only 1 cell ( omologous pairs hromosomes hromatids

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 23QP: A cell has a diploid number of 6 (2n = 6). a. Draw the cell in metaphase of meiosis I. b. Draw the...

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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

Truffles (Tuber borchi) have 2n=8 chromosomes. For the mitotic and meiotic stages below, draw the
chromosomes and chromatids, and give the number of homologous pairs, chromosomes, and
chromatids present. Be sure to differentiate homologous chromosomes by using size, shape, or
other labeling mechanism.
Metaphase of mitosis (
# homologous pairs
# chromosomes
# chromatids
Anaphase of meiosis II – draw and count chromosomes for only 1 cell (
# homologous pairs
# chromosomes
# chromatids

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A cell has a diploid number of 6 (2n = 6). a. Draw the cell in metaphase of meiosis I. b. Draw the cell in metaphase of mitosis. c. How many chromosomes are present in a daughter cell after meiosis I? d. How many chromatids are present in a daughter cell after meiosis II? e. How many chromosomes are present in a daughter cell after mitosis? f. How many pairs of homologous chromosomes are visible in the cell in metaphase of meiosis I?
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.
In both mitosis and meiosis, sister chromatids separate during anaphase, but there are _____ haploid daughter nuclei produced by meiosis compared to ______ diploid nuclei by mitosis.
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?
The cat has a diploid number 2n=38, describe the alignment of chromosomes on the metaphase plate during each phase below and indicate the number of chromosome structures aligned for each phase (single or synapsed structures). In other words, determine the number of structures present at the equatorial plate during metaphase and explain each configuration (the chromosome and chromatid arrangements) composition of each chromatid and if crossing over occurs. a. Mitosis b. Meiosis I c. Meiosis II
Directions: Complete the illustrations that show the differences between mitosis and meiosis. Consider the two-winged fly species Cricotopus sylvestris with chromosome number 2n = 4. Draw the stages (prophase, metaphase, anaphase and telophase with cytokinesis) of the two cell divisions in the corresponding boxes of Table 1. No need to include prometaphase. One box is to one stage. For each stage, draw clearly the appearance and configuration of the cell(s) and the chromosomes. For better illustration, draw the chromosomes with different sizes Use one color for the chromosomes in mitosis and two colors for the chromosomes in meiosis For the description of each stage, include the following: complete name of the stage (include correct number for those that need to have one) unique and important events undergone by the cell(s) and chromosomes appearance and configuration of the chromosomes (thinness or thickness, double-stranded or single-stranded, etc.) number of chromosomes in each…
Directions: Complete the illustrations that show the differences between mitosis and meiosis. Consider the two-winged fly species Cricotopus sylvestris with chromosome number 2n = 4. Draw the stages (prophase, metaphase, anaphase and telophase with cytokinesis) of the two cell divisions in the corresponding boxes of Table 1. No need to include prometaphase. One box is to one stage. For each stage, draw clearly the appearance and configuration of the cell(s) and the chromosomes. Inspect and refer to slides 10 to 11 of the Cell Division PPT for mitosis and slides 14 and 17 for meiosis. Make sure that when the pictures are zoomed in, they will still be clear. For better illustration, draw the chromosomes with different sizes (inspect and refer to slides 10 to 11 of the Cell Division PPT for mitosis and slides 14 and 17 for meiosis). Use one color for the chromosomes in mitosis and two colors for the chromosomes in meiosis (see slides 10 to 11 of the Cell Division PPT for mitosis and…
Construct a table similar to that in Figure 2.12 for the different stages of meiosis, giving the number of chromosomes per cell and the number of DNA molecules per cell for a cell that begins with 4 chromosomes (two homologous pairs) in G1. Include the following stages in your table: G1, S, G2, prophase I, metaphase I, anaphase I, telophase I (after cytokinesis), prophase II, metaphase II, anaphase II, and telophase II (after cytokinesis).
Prophase I in meiosis and Prophase in mitosis have a number of important differences, which of the answers below are one of those differences? a. Prophase I has fewer chromatids than Prophase b. Prophase only occurs in plant cells unlike Prophase I c. Prophase 1 has paired homologous chromosomes which Prophase does not d. Prophase has tetrad/bivalent structures while Prophase I does not
A normal diploid cell from a chimpanzee has 48 chromosomes. How many chromosomes will be in a chimpanzee cell just before meiosis begins, after meiosis I, and after meiosis II? After which of these stages will the chromosomes have two chromatids?
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
Draw a side-by-side comparison of mitosis and meiosis. Include 6 chromosomes in your drawings at the beginning of mitosis and meiosis. Be sure to label the following in each of your drawings where appropriate: chromosomes/chromatin/sister chromatids, mitotic spindle, asters, centromeres, microtubules, centrosomes, kinetochore, and nuclear membrane.