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A pulse-label experiment is performed on a certain human cell line, grown in tissue culture. In the experiment, radioactive deoxythymidine is added for 30 minutes as the “label” (anywhere thymidine is added will include a radioactively tagged thymidine.) The cells are then allowed to grow without radioactive thymidine for an additional length of time prior to harvest/collection. The cells are then examined for the presence of radioactive DNA in the nucleus. Cells that contained radioactive DNA and were undergoing active mitosis were counted.  Pulse-Label Analysis Image Description A graph of a pulse-label experiment to calculate the number of cells with radioactive DNA after the radioactive deoxythymidine is introduced before mitosis. Four hours after the end of the radioactive labeling, there is a sharp increase in the number of cell nuclei with the radioactive label, with 100% of the cells in mitosis showing radioactivity at the 8-hour mark. By the 12-hour mark, there has been a sharp decrease and the percentage returns to 0. Given the data, if the cell cycle in this particular cell line is 24 hours and M-phase lasts 30 minutes, how long is G1 in this particular cell line?

When data is categorized as, for example, places of residence (rural, suburban, urban), what is the most appropriate measure of central tendency?

Use this information to answer the next four questions. A pugnacious ant (Myrmecia pilosula) from Australia, named “bulldog” for its viciousness, has only two chromosomes. It carries all its genetic information in a single pair of chromosomes! Males are haploid and have just one chromosome, and when they make sperm, that one chromosome is in each gamete. (Michael W. J. Crosland and Ross H. Crozier, Myrmecia pilosula, an ant with only one pair of chromosomes, Science, 231(4743), 1278.)

Which of the following is not a characteristic of the most trustworthy types of clinical trials?

Use this information for the next two questions.  Fabry disease is an x-linked recessive disorder in which there is a defect in lysosomal function. A male with Fabry disease and a female carrier have a daughter. What is the probability (among female offspring) that the daughter will be affected?

Find my final grade by finding the weighted mean. Round to one decimal place and write your answer as a percentage.   Source             Score               Weight            HW                  72                    15%     Quiz                 80                    25% Test                 94                    40% Lab                  0                      15% Attendance      55                    5%

QALY stands for

Determine the type of sampling used: A soccer coach selects six players from a group of boys aged eight to ten, seven players from a group of boys aged 11 to 12, and three players from a group of boys aged 13 to 14 to form a recreational soccer team.

In your words, what does the median of a data represent? Give me a practical example/use when one would use the median to describe a data set.

_____________ theories of justice affirm that important benefits and burdens of a society should be distributed equality. To achieve greater equality, the ______ would not be averse to mandating changes to the distribution of society’s goods or to interfering in the workings of a free market.