BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 11, Problem 2A
How does
a. DNA replication takes less time in meiosis because the cells are haploid.
b. During meiosis, there is only one round of replication for two divisions.
c. During mitosis, there is only one round of replication every other division.
d. DNA replication is exactly the same in mitosis and meiosis.
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Even though the processes are very similar, mitosis and meiosis are two very distinct processes. What is the difference between meiosis and mitosis?
a.
Mitosis results in two identical sister cells genetically identical to the original parent cell, while meiosis also starts with diploid but results in haploid cells.
b.
Mitosis only occurs in plants and single cell organisms, while meiosis only occurs in animals.
c.
Mitosis starts with diploid but results in haploid cells, while meiosis results in two identical sister cells genetically identical to the original parent cell.
In which phases in meiosis is variation of genetic makeup accomplished?
a. Prophase I, Anaphase I and Anaphase II
b. Prophase II, Anaphase I and Anaphase II
c. Prophase I, Metaphase I and Anaphase II
d. Prophase II, Metaphase I and Metaphase II
If 6 cells undergoing celll division has 12 chromosomes, how many chromosome will there be in the daughter cells after mitosis and meiosis II respectively?
a. 6 and 12
b. 12 and 6
c. 6 and 3
d. 6 and 6
In meiosis, the number of chromosomes of the mother cell compared to the resultant daughter cell's chromosome is
A. doubled
B. halved
C. tripled
D. the same
Elongation of the cell undergoing the last phases of mitosis is due to
A. movement of the chromosomes to the opposite poles
B. increase in the volume of the cytoplasm that should be contained
C. depolymerization of the spindle fibers connected to the kinetochore
D. polymerization of the spindle fibers not connected to the kinetochore
What is the function of the kinetochore during mitosis?a. It promotes the attachment of monads to each other toform a dyad.b. It is a location where a kinetochore microtubule can attachto a chromosome.c. It promotes the condensation of chromosomes duringprophase.d. Both a and b are correct.
Chapter 11 Solutions
BIOLOGY
Ch. 11.1 - Prob. 1LOCh. 11.1 - Prob. 2LOCh. 11.2 - Describe how homologous chromosomes pair during...Ch. 11.2 - Prob. 2LOCh. 11.3 - Prob. 1LOCh. 11.3 - Prob. 2LOCh. 11.3 - Prob. 3LOCh. 11.4 - Prob. 1LOCh. 11.4 - Prob. 2LOCh. 11.4 - Explain the importance of the suppression of...
Ch. 11 - Prob. 1IQCh. 11 - In comparing somatic cells and gametes, somatic...Ch. 11 - What are homologous chromosomes? a. The two halves...Ch. 11 - Chiasmata form a. between homologous chromosomes....Ch. 11 - Crossing over involves each of the following with...Ch. 11 - During anaphase I a. sister chromatids separate...Ch. 11 - At metaphase I the kinetochores of sister...Ch. 11 - What occurs during anaphase of meiosis II? a. The...Ch. 11 - Which of the following does NOT contribute to...Ch. 11 - How does DNA replication differ between mitosis...Ch. 11 - Which of the following is NOT a distinct feature...Ch. 11 - Which phase of meiosis I is most similar to the...Ch. 11 - Structurally, meiotic cohesins have different...Ch. 11 - Prob. 6ACh. 11 - Diagram the process of meiosis for an imaginary...Ch. 11 - Mules are the offspring of the mating of a horse...Ch. 11 - Compare the processes of independent assortment...Ch. 11 - Aneuploid gametes are cells that contain the wrong...
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- When does DNA replication occur during meiosis? a. during telophase b. during prophase I c. during anaphase and telophase d. during interphase before meiosis I beginsarrow_forwardWhich of these things happens in meiosis but Not mitosis? A. sister chromatids separate from each other B. diploid daughter cells are formed C. homologous chromosomes pair uparrow_forwardWhen a germ cell undergoes meiosis, which event would MOST likely result in four aneuploid daughter cells? A. misalignment of the chromosomes during metaphase I B. misalignment of the chromosomes during anaphase I C. misalignment of the chromosomes during metaphase II D. misalignment of the chromosomes during anaphase IIarrow_forward
- The drug colchicine prevents the spindles microtubules from forming or growing. What would happen in mitosis to a cell that was given colchicine throughout mitosis? A. The chromosomes would not condense B. The nuclear envelope would not dissolve C. The chromosomes would not line up for metaphase D. The chromosomes would line up for metaphase but would not pull apart in anaphase.arrow_forwardHow do telophase I and telophase II differ during meiosis in animal cells? a. Cells remain diploid at the end of telophase I, but are haploid at the end of telophase II. b. Daughter cells form a cell plate to divide during telophase I, but divide by cytokinesis during telophase II. c. Cells enter interphase after telophase I, but not after telophase II. d. Chromosomes can remain condensed at the end of telophase I, but decondense after telophase II.arrow_forwardWhich statement about eukaryotic chromosomes entering mitosis is NOT true?a. They enter as two chromatids.b. They enter with a single centromere.c. They are soon visible under the light microscope.d. Their DNA is not yet replicated.arrow_forward
- In mitosis, chromosomes separate by which specific mechanism? A. chromosomes sprout flagella and begin to swim towards the ends of the cell B. molecular motors in the kinetochore move the chromosome toward the centrioles C. centrioles attract the chromosomes by electromagnetic attraction D. centrioles begin to shorten microtubules by degrading themarrow_forwardWhat cellular process is responsible for genetic recombination? a. The independent alignment of homologous pairs during meiosis I b. Separation of the homologues in meiosis I c. Separation of the chromatids during meiosis II d. Crossing over between homologuesarrow_forwardWhen does chromosomal nuclear DNA, which is found inside the nucleus of a eukaryotic cell, replicate? A. All types of eukaryotic cell in a human organism replicates throughout their life span. B. It only replicates during the S phase (synthesis phase) of the cell cycle. C. The chromosomal DNA only replicates once throughout their lifetime. D. It replicates during the G1 and G2 phases of the M(mitosis) phase of Meiosis.arrow_forward
- When homologous chromosomes cross over, what is the result? a. Two sister chromatids get tangled, resulting in one altering the sequence of its DNA b. Two sister chromatids exchange identical pieces of DNA c. Two nonsister chromatids get tangled, break and proteins re-join them d. Each of the four DNA strands of a homologous pair is broken, and the pieces are mixedarrow_forwardUse an illustration to show the differences between mitosis and meiosis. Explain three processes that give rise to genetic variation. The diagram below shows a pair of homologous chromosomes in a diploid cell. Which of the following is the correct diagram of the gametes that produced the cell if there were no errors in meiosis?arrow_forwardWhen does synapsis between homologous chromosomes occur? A. prophase I of meiosis B. prophase II of meiosis C. prophase of mitosis D. metaphase of mitosisarrow_forward
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