Chapter 8: The Cellular Basis of Reproduction and Inheritance
 
Chapter Quiz
 
 Pre-Test   Activity Quiz   Chapter Quiz 

1 .       The "beads on a string" level of DNA packing refers to 



2 .       A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. How many chromatids does it contain altogether? [Hint]



3 .       It is difficult to observe individual chromosomes with a light microscope during interphase because _____. [Hint]



4 .       During meiosis, homologous chromosomes sometimes "stick together" and do not separate properly. This phenomenon is known as _____. [Hint]



5 .       A cell entering the cell cycle with 32 chromosomes will produce two daughter cells, each with _____. [Hint]



6 .       Chromatids are _____. [Hint]



7 .       DNA replication occurs _____. [Hint]



8 .       Chromatids form _____. [Hint]



9 .       In some organisms such as certain fungi and algae, cells undergo mitosis repeatedly without subsequently undergoing cytokinesis. What would result from this? [Hint]



10 .       The function of the cell cycle is to produce daughter cells that _____. [Hint]



11 .       Cytokinesis refers to _____. [Hint]



12 .       In the telophase of mitosis, the mitotic spindle breaks down and the chromatin uncoils. This is essentially the opposite of what happens in _____. [Hint]



13 .       At which point in the cell cycle do centrosomes begin to move apart to two poles of the cell in a dividing human liver cell? [Hint]



14 .       The phase of mitosis during which the chromosomes move toward separate poles of the cell is _____. [Hint]



15 .       One event occurring during prophase is _____. [Hint]



16 .       Which one of the following does NOT occur during mitosis? [Hint]



17 .       At which stage of mitosis are chromosomes lined up in one plane in preparation for their separation to opposite poles of the cell? [Hint]



18 .       You would know a dividing cell was a plant cell rather than an animal cell if you saw that it had ___________. [Hint]



19 .       Cytochalasin B is a chemical that disrupts microfilament formation. This chemical would interfere with _____. [Hint]



20 .       In animal cell mitosis, the cleavage furrow forms during ___________. [Hint]



21 .       In simple cell division of animal cells, a cleavage furrow is visible during 



22 .       What is the difference between a benign tumor and a malignant tumor? [Hint]



23 .       Chromosomes of diploid organisms that are NOT involved in sex determination are called _____. [Hint]



24 .       How many pairs of autosomes do humans have? [Hint]



25 .       Which of the following is a normal human female? [Hint]



26 .       In humans, the __________ determines the sex of the offspring because __________. [Hint]



27 .       When we say that an organism is haploid, we mean that _____. [Hint]



28 .       The diploid phase of the human life cycle begins with _____. [Hint]



29 .       Which one of the following is NOT a function of meiosis in humans? [Hint]



30 .       What is the typical result when a diploid cell undergoes meiosis? [Hint]



31 .       In a cell containing 10 chromosomes, meiosis results in the formation of daughter cells containing __________ chromosomes. [Hint]



32 .       At the end of telophase I of meiosis and cytokinesis, there are _____. [Hint]



33 .       Homologous chromosomes pair during _____. [Hint]



34 .       During anaphase II _____. [Hint]



35 .       During anaphase I _____. [Hint]



36 .       Crossing over occurs during _____. [Hint]



37 .       An organism has a haploid chromosome number n = 4. How many tetrads will form during meiosis? [Hint]



38 .       Which event occurs only during prophase I of the first meiotic division? [Hint]



39 .       What is the function of meiosis? [Hint]



40 .       Each cell in an individual with Down syndrome contains ____ chromosomes. [Hint]



41 .       Mitosis and cytokinesis result in the formation of ______; meiosis and cytokinesis result in the formation of ________. [Hint]



42 .       Mitosis and meiosis differ in several ways. Meiosis, but not mitosis, _____. [Hint]



43 .       Meiosis is more complicated than mitosis because it carries out more complicated functions. Meiosis must _____. [Hint]



44 .       Which one of the following occurs in meiosis, but not in mitosis? [Hint]



45 .       Variation occurs when chromosomes are shuffled in _____. [Hint]



46 .       A karyotype is _____. [Hint]



47 .       If the diploid number of chromosomes in a certain animal is 6 (2n = 6), there are three sets of 2 homologous chromosomes each, or three pairs. How do these three pairs align and separate in meiosis? [Hint]



48 .       The major contribution of sex to evolution has been _____. [Hint]



49 .       Two chromosomes in a nucleus that carry genes for the same traits in the same places, but specify different versions of the same traits, are called _____. [Hint]



50 .       Sites of crossing over are called _____. [Hint]



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