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Exam 8: The Cellular Basis of Reproduction and Inheritance

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Question 41

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Which of the following variations of the sentence "Where is the cat?" is most like a chromosomal inversion?

A) Where is cat?
B) Where is the the cat?
C) Where the is cat?
D) Where is cat the the cat?

E) None of the above
F) A) and C)

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Question 42

Multiple Choice

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Asexual reproduction requires ________ individual(s) , whereas sexual reproduction requires ________ individual(s) .

A) 1; 1
B) 1; 2
C) 2; 1
D) 2; 2

E) All of the above
F) B) and C)

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Question 43

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You have two flasks (labeled A and B) that each contain an equal population of normal animal cells. You place flask A in a machine called a shaking incubator, which shakes the flask at 37°C and keeps the cells moving so as to not allow them to adhere to the bottom of the flask. Flask B is allowed to sit in an incubator (without shaking) at 37°C. If you let the cells in each flask grow for a week, which of the following results are you most likely to observe?

The phase of mitosis during which the mitotic spindle begins to form is

Source: Adapted from C. A. Huether et al., Maternal age specific risk rate estimates for Down syndrome among live births in whites and other races from Ohio and Metropolitan Atlanta, 1970-1989, Journal of Medical Genetics 35: 482-90 (1998) . Figure 8.20B Maternal age and incidence of Down syndrome -You are studying chromosomal movement in a frog species whose haploid number is 3. What will you see in meiosis I prophase of this cell?

With the exception of identical twins, siblings who have the same two biological parents are likely to look similar, but not identical, to each other because they have

Source: Adapted from C. A. Huether et al., Maternal age specific risk rate estimates for Down syndrome among live births in whites and other races from Ohio and Metropolitan Atlanta, 1970-1989, Journal of Medical Genetics 35: 482-90 (1998) . Figure 8.20B Maternal age and incidence of Down syndrome -If scientists studying cancer could understand how to promote cell division in cells that do not ordinarily divide, this might help people who had injuries involving

Which of the following statements regarding sexual and asexual reproduction is true?

A technique called flow cytometry is used by scientists and researchers to count or sort cells based on specific properties. By labeling cellular DNA with a fluorescent dye, flow cytometry can sort cells based on the amount of DNA present, thereby making it possible to distinguish between cells that are in different stages of the cell cycle. Flow cytometry is especially useful to the medical community because it can help with the diagnosis of certain types of cancers. Below is a typical set of data that you might obtain when running a flow cytometry experiment using a sample of healthy skin cells. Use this figure to help you answer the following questions. After reading the paragraph below, answer the questions that follow. -Which peak corresponds to cells in G1? In S phase? In G2?

Eukaryotic chromosomes differ from prokaryotic chromosomes in that they

Which of the following statements regarding mitosis and meiosis is false?

During which phase of mitosis does the nuclear envelope re-form?

When observing a bird skin cell in G2 under a microscope, you count 160 total chromatids. How many chromosomes does a male chicken have in its sperm cells?

Jacobsen syndrome, which can cause heart defects, intellectual deficiencies, and bleeding disorders, is caused by a deletion of the terminal end of chromosome 11. What method could you use to determine whether an individual has Jacobsen syndrome?

You are asked to culture an unidentified sample of animal tissue. You notice that the cells seem to fail to exhibit density-dependent inhibition. The source of this tissue sample is most likely

Which of the following statements correctly describes the behavior of a tetrad during anaphase I of meiosis?

A technique called flow cytometry is used by scientists and researchers to count or sort cells based on specific properties. By labeling cellular DNA with a fluorescent dye, flow cytometry can sort cells based on the amount of DNA present, thereby making it possible to distinguish between cells that are in different stages of the cell cycle. Flow cytometry is especially useful to the medical community because it can help with the diagnosis of certain types of cancers. Below is a typical set of data that you might obtain when running a flow cytometry experiment using a sample of healthy skin cells. Use this figure to help you answer the following questions. After reading the paragraph below, answer the questions that follow. -In this sample of cells, what stage of the cell cycle are most of the cells in?

Looking into your microscope, you spot an unusual cell. Instead of the typical rounded cell shape, the cell has a very narrow middle separating two bulging ends. It sort of looks like the number 8! You realize that this cell is

Which of the following types of organisms commonly demonstrates polyploidy?

Source: Adapted from C. A. Huether et al., Maternal age specific risk rate estimates for Down syndrome among live births in whites and other races from Ohio and Metropolitan Atlanta, 1970-1989, Journal of Medical Genetics 35: 482-90 (1998) . Figure 8.20B Maternal age and incidence of Down syndrome -What is the stage of cell division in a diploid organism if you see seven chromosomes, each consisting of a pair of sister chromatids?