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Chapter Post-Test



 This activity contains 41 questions.

Question 1
1
Open Hint for Question 1 in a new window		 Which of the following statements about gametes is false?
 
End of Question 1


Question 2
2
Open Hint for Question 2 in a new window		 Which of the following statements about meiosis is true?
 
End of Question 2


Question 3
3
Open Hint for Question 3 in a new window		 Which of the following statements concerning human oogenesis is false?
 
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Question 4
4
Open Hint for Question 4 in a new window		 During which type(s) of cell division does a ring of contractile microfilaments form a cleavage furrow around the equator of the cell?
 
End of Question 4


Question 5
5
Open Hint for Question 5 in a new window		 During which type(s) of cell division can chromosomes be composed of two chromatids, and each chromosome is lined up on the equatorial plane of the cell?
 
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Question 6
6
Open Hint for Question 6 in a new window		 Which type(s) of cell division are immediately preceded by replication of DNA?
 
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Question 7
7
Open Hint for Question 7 in a new window		 During which type(s) of cell division do chromosomes that were composed of two chromatids become chromosomes composed of a single chromatid?
 
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Question 8
8
Open Hint for Question 8 in a new window		 The important process of crossing over occurs during which stage of meiosis?
 
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Question 9
9
Open Hint for Question 9 in a new window		 If a cell has a diploid number of 10 (2n = 10), how many chromosomes will be present in each daughter cell at the end of meiosis?
 
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Question 10
10
Open Hint for Question 10 in a new window		 The Y chromosome can be used to trace a person's lineage many generations into the past. What characteristic of the Y chromosome makes that possible?
 
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Question 11
11
Open Hint for Question 11 in a new window		 When you examine a cell under a microscope, you see that the nucleus is not present and that the chromosomes are condensed and lined up singly in the center of the cell. In what stages of division might this cell be?
 
End of Question 11


Question 12
12
Open Hint for Question 12 in a new window		 One of the critical functions of meiosis is the formation of new combinations of genetic material. This is important for producing variety in the offspring. In what two phases of meiosis does this formation of new combinations take place?
 
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Question 13
13
Open Hint for Question 13 in a new window		 The exchange of genetic material between homologous chromosomes that leads to new combinations of genetic material during meiosis is called ________.
 
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Question 14
14
Open Hint for Question 14 in a new window		 Which of the following processes leads to genetic diversity?
 
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Question 15
15
Open Hint for Question 15 in a new window		 An autosome is ____________.
 
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Question 16
16
Open Hint for Question 16 in a new window		 A couple has just had their fourth son. The father cannot understand why his wife cannot produce a daughter. Explain to the father why the problem is not with his wife.
 
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Question 17
17
Open Hint for Question 17 in a new window		 Which of the following statements concerning human spermatogenesis is correct?
 
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Question 18
18
Open Hint for Question 18 in a new window		 Why is it not necessary for polar bodies to form in spermatogenesis?
 
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Question 19
19
Open Hint for Question 19 in a new window		 Which of the following is a type of sexual reproduction?
 
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Question 20
20
Open Hint for Question 20 in a new window		 If a sperm cell contains 16 chromosomes, the original parent cell that started meiosis must have contained ____ chromosomes.
 
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Question 21
21
Open Hint for Question 21 in a new window		 Crossing over occurs during ___________, and it is important because it ___________.
 
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Question 22
22
Open Hint for Question 22 in a new window		 A gene that codes for the development of hairy ears is located on the Y chromosome in humans. A man with hairy ears has a son. What are the chances that the son will have hairy ears?
 
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Question 23
23
Open Hint for Question 23 in a new window		 A certain allele for a genetic disease is located on the X chromosome. Two parents have a son. The father carries the allele for the trait on his X chromosome but the mother does not. What are the chances that the son will inherit the disease?
 
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Question 24
24
Open Hint for Question 24 in a new window		 If a daughter cell contains 14 chromosomes at the end of meiosis I, how many chromosomes will each daughter cell contain at the end of meiosis II?
 
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Question 25
25
Open Hint for Question 25 in a new window		 Which of these events occurs in meiosis but not in mitosis?
 
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Question 26
26
Open Hint for Question 26 in a new window		 A mistake occurred in meiosis such that one of the gametes produced received an extra sex chromosome. Assume this gamete was fertilized by a normal gamete and the resulting embryo contained the sex chromosomes XYY. Can you determine which parent's gamete contained the extra sex chromosome?
 
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Question 27
27
Open Hint for Question 27 in a new window		 What features are associated with mature sperm?
 
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Question 28
28
Open Hint for Question 28 in a new window		 If a single human cell fails to undergo cytokinesis in telophase II of meiosis, how many chromosomes would be present in the resulting cell?
 
End of Question 28


Question 29
29
Open Hint for Question 29 in a new window		 When you examine a cell under a microscope, you see that the nucleus is not present and the chromosomes are condensed and lined up in pairs in the center of the cell. In what stages of division might this cell be?
 
End of Question 29


Question 30
30
Open Hint for Question 30 in a new window		 An example of sexual reproduction is _________.
 
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Question 31
31
Open Hint for Question 31 in a new window		 Which of the following statements about spermatogenesis and oogenesis is not correct?
 
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Question 32
32
Open Hint for Question 32 in a new window		 Where do all the first organelles come from in a new zygote?
 
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Question 33
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Open Hint for Question 33 in a new window		 Which of the following statements about the products of a single cell that has gone through meiosis is true?
 
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Question 34
34
Open Hint for Question 34 in a new window		 A human cell fails to undergo cytokinesis while performing meiosis I so that the daughter cells do not form. How many chromosomes will be in each resulting cell?
 
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Question 35
35
Open Hint for Question 35 in a new window		 A cell contains 16 chromosomes at the end of prophase I. How many chromosomes will be in each daughter cell at the end of prophase II?
 
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Question 36
36
Open Hint for Question 36 in a new window		 You are looking at diagrams of cells in the process of division but are uncertain as to what process you are viewing. You determine that the cells you are looking at have three chromosomes (an odd number). You can confidently assume that these cells are in which phase based on that chromosome number?
 
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Question 37
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Open Hint for Question 37 in a new window		 If starting with a cell that has a haploid number of 5, during mitosis there will be _____ chromosomes at metaphase, _______ chromosomes at anaphase, and _______ chromosomes per daughter cell at telophase.
 
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Question 38
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Open Hint for Question 38 in a new window		 A gamete from a human female contains _______.
 
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Question 39
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Open Hint for Question 39 in a new window		 What is the purpose of recombination (crossing over)?
 
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Question 40
40
Open Hint for Question 40 in a new window		 The cells at the end of meiosis I are not ready to function as gametes. Why not?
 
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Question 41
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Open Hint for Question 41 in a new window		 Horses have a diploid number of 64, and donkeys have a haploid number of 62. A mule is the result of fertilization between a horse gamete and a donkey gamete. The mule's chromosome number is _____________.
 
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