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Test Prep CLEP Science and Mathematics Exam (page: 20)
Test Prep CLEP Science and Mathematics: Biology, Calculus, Chemistry, College Algebra & Mathematics, Precalculus, Natural Sciences
Updated on: 29-Mar-2026

Viewing Page 20 of 103
CLEP Science and Mathematics PDF 494 Questions

Duchenne muscular dystrophy (DMD) is a sex-linked recessive disorder that results in a degenerative disease of the muscles of the body. As muscles gradually deteriorate, patients lose the ability to control the muscles and eventually die as breathing muscles are rendered useless. An extended family was studied over several generations and the incidence of DMD was followed as indicated in the pedigree below.


How many generations of family are represented on the pedigree shown?

  1. 3
  2. 4
  3. 5
  4. 6
  5. 12

Answer(s): B

Explanation:

Each level of the pedigree is one generation. John and his wife are the parents of child "B" and another girl, while Jimmy and Janey are the grandchildren of John and his wife, and individuals on the row with "C" and "D" are the great-grandchildren.



A diagram of the cell cycle of the eukaryotic species C. elegans is shown below.


During "S" phase of the cell cycle, C elegans cells are:

  1. growing larger
  2. dividing into two new cells.
  3. in a period of dormancy
  4. copying ONA and organelles
  5. synthesizing large amounts of ATP

Answer(s): D

Explanation:

S phase is "synthesis" phase, but not of more ATP than usual. During S phase, cells copy their DNA and organelles in preparation for cell division, which takes place during M phase, or mitosis.



A diagram of the cell cycle of the eukaryotic species C. elegans is shown below.



During which of the following phases docs the nuclear membrane of the cell start to break apart so that chromosomes will be able to move to opposite sides of the dividing cell?

  1. Interphase
  2. Prophase
  3. Metaphasc
  4. Anaphase
  5. Telophase

Answer(s): B

Explanation:

It is during the first phase of mitosis, prophase that the nuclear membrane breaks down.



A diagram of the cell cycle of the eukaryotic species C. elegans is shown below.


At the very end of mitosis, two daughter cells will be created by a process that pinches one cell in two. This process of pinching is called

  1. cytokinesis
  2. cytolysis
  3. cytosolic pinching
  4. endocytosis
  5. exocytosis

Answer(s): A

Explanation:

The pinching off of one cell to create two new cells at the end of mitosis is called cytokinesis.



A diagram of the cell cycle of the eukaryotic species C. elegans is shown below.



During all the following phases of the cell cycle, C elegans will have its DN A in a replicated state, EXCEPT:

  1. G1
  2. S
  3. G2
  4. M
  5. all of interphase

Answer(s): A

Explanation:

DNA is copied during S phase, so G1 is the only phase during which DNA is still uncopied.



Viewing Page 20 of 103



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