Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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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
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 slides 14 and 17 for 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 cell (whether 2n = __ or n = _ )
- number of daughter cells (There are only 3 stages that should have this so most of the stages would have zero. Write the number zero then.)

Transcribed Image Text:Slide 14
Meiosis
Meiosis I: Reduction Division
MEIOSIS I: Separates homologous chromosomes
Prophase
Metaphase
Anaphase
Telophae and
Cytokinenis
Cen e
reman ached
Chmata
dat
Cerome
wth ihoe
M
Fagert
dromonom
h epar
Mootu
hed
ochon
Dated homgoun
er cmati
ndharge
h mp
Chomosom ie
by homologn pain
Photos taken from Reece et.al 2011
Slide 17
Meiosis
Meiosis II: Equational Division
MEIOSIS II: Separates sister chromatids
Anaphase
Prophase II
Metaphase
Telophase l and
Cytokinesis
During ather rndof the s de aty sepe
our hapd daghter cs re contaiing undted rom
at
ng
Photos taken from Reece et.al 2011

Transcribed Image Text:Slide 10
Mitosis
G, of Interphase
Prophase
Prometaphase
Ch
w
Photos taken from Reece et.al 2011
Slide 11
Mitosis
Metaphase
Anaphase
Telophase and Cytokinesis
ww
Photos taken from Reece et.al 2011
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