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Chapter 6 Reading Questions
Name: Patrick Burke
there in each daughter
C) a cell plate begins to form at telophase, whereas in animals a cleavage furrow is initiated at that stage
D) chromosomes become attached to the spindle at prophase, whereas in animals chromosomes do not
become attached until anaphase.
E) spindle poles contain centrioles, whereas spindle poles in animals do not.
12) Cells from an advanced malignant tumor most often have very abnormal chromosomes, and often an
abnormal total number of chromosomes. Why might this occur?
A) Cancer cells are no longer density dependent.
B) Cancer cells are no longer anchorage dependent.
C) Chromosomally abnormal cells can still go through cell cycle checkpoints.
part of welost
D) Chromosomally abnormal cells still have normal metabolism.
E) Transformation introduces new chromosomes into cells.
13) Asexual reproduction and sexual reproduction differ in all but which of the following ways?
A) Individuals reproducing asexually transmit 100% of their genes to their progeny, whereas individuals
reproducing sexually transmit only 50%.
B) Asexual reproduction produces offspring that are genetically identical to the parents, whereas sexual
reproduction gives rise to genetically distinct offspring.
C) Asexual reproduction involves a single parent, whereas sexual reproduction involves two.
D) Asexual reproduction requires only mitosis, whereas sexual reproduction always involves meiosis.
E) Asexual reproduction is utilized only by fungi and protists, whereas sexual reproduction is utilized
only by plants and animals.
14) Asexual reproduction results in identical offspring unless which of the following occurs?
A) Natural selection
E) Environmental change
C) Crossing over
15) What is a karyotype?
A) The set of unique physical characteristics that define an individual
B) The collection of all the mutations present within the genome of an individual
C) The combination of chromosomes found in a gamete
D A system of classifying cell nuclei
E) A display of every pair of homologous chromosomes within a cell, organized according to size and
16) At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
( B) Metaphase
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17) Which of the following is true of a species that has a chromosome number of 2n = 16? w ww sidi To
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A) The species is diploid with 32 chromosomes per cell.
B) The species has 16 sets of chromosomes per cell.
C Each cell has 8 homologous pairs.
D) During the S phase of the cell cycle there will be 32 separate chromosomes.
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E) A gamete from this species has 4 chromosomes.
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