Cytokinesis , or division of the cytoplasm to create two new daughter cells , occurs in conjunction with telophase . Examine the telophase micrographs of the onion root tip and whitefish blastodisc cells . How does cytokinesis look different for these two cells ? Explain why cytokinesis looks different between those cells
Cytokinesis , or division of the cytoplasm to create two new daughter cells , occurs in conjunction with telophase . Examine the telophase micrographs of the onion root tip and whitefish blastodisc cells . How does cytokinesis look different for these two cells ? Explain why cytokinesis looks different between those cells
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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Cytokinesis , or division of the cytoplasm to create two new daughter cells , occurs in conjunction with telophase . Examine the telophase micrographs of the onion root tip and whitefish blastodisc cells . How does cytokinesis look different for these two cells ? Explain why cytokinesis looks different between those cells
Transcribed Image Text:Telophase
Cortex
Vascular cylinder
Epidermis
Anaphase
Key
Zone of
maturation
Dermal
Root hair
Interphase
Ground
Vascular
Prophase
Zone of
elongation
Metaphase
Apical
meristem
Zone of cell
division
Root cap-
100 um
The onion root cell cycle lasts approximately 12 hours with mitosis taking about 1-2 hours. The length of
each stage of mitosis varies as well. You can use this information, in combination with the percentage of
cells in each stage of the cell cycle, to estimate how long each stage of the cell cycle lasts.
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Transcribed Image Text:MITOSIS ASSIGNMENT - Saved to this PC
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Whitefish blastodiscs (FIGURE 4) are commonly used to study the ANIMAL cell cycle. Blastodiscs, also
known as blastocysts or blastula, are a very early embryonic stage that all animals experience. In
humans, this stage occurs from about days 4 through 14 post-fertilization. Because embryos are
growing and developing, the rapidly dividing cells can be observed in all stages of the cell cycle.
FIGURE 4: WHITEFISH BLASTODISC (EMBRYO) IS A BALL OF CELLS UNDERGOING RAPID CELL DIVISION
cell membrane
chromosomes
PROCEDURE:
1) Examine the cells in Table 4 below. Each cell is a micrograph of individual whitefish blastodisc cell.
a. Use your knowledge of cell cycle stages, as well as Figure 8.8 of your textbook, to identify
which stage of the cell cycle each cell is in.
b. Record your answers in Table 4 below. Be sure to include your reasoning-that is, how could
you tell it was in that stage?
TABLE 4: DETERMINING CELL CYCLE STAGE OF WHITE BLASTODISC CELLS
Cell
Stage
Reasoning
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