Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 11, Problem 2DAA
HeLa Cells Are a Genetic Mess HeLa cells can vary in chromosome number. Defects in proteins that orchestrate cell division result in descendant cells with too many or too few chromosomes, an outcome that is one of the ha1lmarks of cancer cells. The panel of chromosomes in FIGURE 11.9, originally published in 1989, shows all of the chromosomes in a single metaphase HeLa cell.
FIGURE 11.9 Karyotype of HeLa showing chromosomes in one cell.
How many extra chromosomes does this cell have, compared to a normal human body cell?
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Match the letter of the term with its description.
Centriole
Chromosome
Chromatid
Diploid
DNA
Gene
Haploid
Description
makes spindle fibers
is the hereditary material in chromosomes
a cell containing two complete sets of chromosomes
a cell containing a single set of unpaired chromosomes
code for a specific trait (e.g. ability to roll the tongue)
one of a pair of identical chromosomes formed by the replication of a single chromosome
any of several thread-like structures, made of chromatin
The figure below depicts cells from the same organism. Cell A is demonstrating which of the
following:
K J
A
Anaphase I
Anaphase II
O Anaphase of mitosis
O Non-disjunction
LLL
B
دے
C
The figure below shows the number of chromosomes observed in an actively dividing cell
at each stage of cell division.
A
B
number of chromsomes per cell
C
100
90
D
80
A bar graph comparing the number of chromosomes at different stages of cell division.
20
Which of the following best explains the change in the number of chromosomes between metaphase and
anaphase?
prophase
metaphase anaphase telophase cytokinesis
stage of cell division
New chromosomes formed during prophase are doubled during anaphase.
DNA replication occurs between metaphase and anaphase, doubling the number of
chromosomes.
During metaphase, a cell contains identical copies of each chromosome, and then trans-
forms into sister chromatids.
During anaphase, the chromatids are separated, each becoming independent chromo-
somes in its respective new cell
Chapter 11 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 11 - HeLa Cells Are a Genetic Mess HeLa cells can vary...Ch. 11 - HeLa Cells Are a Genetic Mess HeLa cells can vary...Ch. 11 - HeLa Cells Are a Genetic Mess HeLa cells can vary...Ch. 11 - Prob. 1SQCh. 11 - A duplicated chromosome has how many chromatids?Ch. 11 - In the diagrams of the nucleus shown below, fill...Ch. 11 - Homologous chromosomes _______. a. are inherited...Ch. 11 - Most healthy body cells spend the majority of...Ch. 11 - The spindle attaches to chromosomes at the...Ch. 11 - Which is not a stage of mitosis? a. prophase b....
Ch. 11 - In intervals of interphase, G stands for ______....Ch. 11 - Interphase is the part of the cell cycle when...Ch. 11 - After mitosis the chromosome number of a...Ch. 11 - Cytoplasm of a plant cell divides by the process...Ch. 11 - Prob. 12SQCh. 11 - Match each stage with the events listed. _____...Ch. 11 - Prob. 14SQCh. 11 - Prob. 15SQCh. 11 - When a cell reproduces by mitosis and cytoplasmic...Ch. 11 - How is the human life cycle related to the cell...Ch. 11 - The photo on the left shows an early frog embryo...Ch. 11 - The cell above is a lung cell of a salamander. In...Ch. 11 - The eukaryotic cell at left is in the process of...Ch. 11 - Exposure to radioisotopes or other sources of...
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- Figure 10.6 Which of the following is the correct order of events in mitosis? Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus reforms and the cell divides. Cohesin proteins break down and the sister chromatids separate. The kinetochore becomes attached to the mitotic spindle. Cohesin proteins break down and the sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the cohesin proteins. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.arrow_forwardHeLa Cells Are a Genetic Mess HeLa cells can vary in chromosome number. Defects in proteins that orchestrate cell division result in descendant cells with too many or too few chromosomes, an outcome that is one of the ha1lmarks of cancer cells. The panel of chromosomes in FIGURE 11.9, originally published in 1989, shows all of the chromosomes in a single metaphase HeLa cell. FIGURE 11.9 Karyotype of HeLa showing chromosomes in one cell. Can you tell that this cell came from a female? How?arrow_forwardHeLa Cells Are a Genetic Mess HeLa cells can vary in chromosome number. Defects in proteins that orchestrate cell division result in descendant cells with too many or too few chromosomes, an outcome that is one of the ha1lmarks of cancer cells. The panel of chromosomes in FIGURE 11.9, originally published in 1989, shows all of the chromosomes in a single metaphase HeLa cell. FIGURE 11.9 Karyotype of HeLa showing chromosomes in one cell. What is the chromosome number of this HeLa cell?arrow_forward
- The process of mitosis (select all that apply) Group of answer choices 1. occurs in somatic cells 2. results in diploid daughter cells 3. produces gametes 4. results in haploid daughter cells 5. produces two daughter cells 6. results in identical daughter cellsarrow_forwardDrag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help breaks in chromosomes The two resulting daughter cells completely identical if divide first and then duplicate advantageous chromosomes. The replication that occurs after division would generate which would be be repaired according to the cell. In this case, the genetic information inherited less accurately. This way of cell division would be parent for organisms and would likely be daughter mutations spread would not be deletions eliminated couldn't could disadvantageous P Pearsonarrow_forwardA diploid organism has chromosomes. Use colours or symbols to show which chromosomes are which throughout each stage. Draw and label the chromosomes, sister chromatids, centromeres, spindle fibres, tetrad, crossing over and nucleus where appropriate. Prophase I Metaphase I Anaphase I Telophase I Prophase II Metaphase II Anaphase II Telophase II O曲T回A@ 28 Ai MacBook Pro K 2$ & 2 3 E R Y D F G K V B M command MOSISO commandarrow_forward
- The cells bellow are in the process and stages as indicated. Each cell has a 2n # of 6. In the cells below show all of the chromosomes and their proper location and draw and label the metaphase plate, kinetochore, spindle, centrosomes, homologous chromosomes, microtubules, DNA, sister chromatids, centromere MITOSIS (Metaphase) Total number of chromosomes Total number of homologous pairs of chromosomes MEIOSIS (Metaphase I)arrow_forwardStructure P Cell S State the chromosomal number in parent cell and the daughter cells formed. Parent cell: Daughter cell 1: Daughter cell 2:arrow_forwardWhat are the stages of mitosis Chromatid doublets seperate to individual chromosomes. Centriole replicates Replicated chromosomes are arranged in single file net to another at the cell's equator.arrow_forward
- Mitosis is used to make more body cells while meiosis is only used to make gametes for sexual reproduction. Use the diagram to identify one similarity and one difference between mitosis and meiosis. Your answer must specifically refer to this diagram. [i.e. say what specific cells in the diagram show the similarity or difference] Mitosis Parent cell Meiosis Parent cell DNA replicates DNA replicates 2 daughter cells 2 daughter cells 4 daughter cells U.S. National Library of Medicine (Level 3) tv МacВook Air 80 DD F5 F7 F8 F9 F10 F2 F3 @ # $ & * 3 4 9. 7 8 W E R Y 一 S H J K C V M Varrow_forwardThe genes below have been knocked out (loss of function). Draw what the cell would look like during the appropriately affected stage of mitosis. State what stage you are depicting on your drawing. (Each gene knockout is occurring in a different cell; you should have a drawing of the affected cell for each). 1. Separase, 2. Cohesinarrow_forwardAssume that cell does mitosis Assume that cell does meiosis What is the diploid number of chromosomes in this organism? Give the number of chromosomes and the number of DNA molecules per cell present at the stages represented. I tried to solve them, but I'm not sure what I did right and what was wrong. Please correct it for me. See that attached photo.arrow_forward
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