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Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Edition 11ISBN: 9781292139456Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Edition 11ISBN: 9781292139456 Exercise 29
Bacterial conjugation, mediated mainly by conjugative plasmids such as F, represents a potential health threat through the sharing of genes for pathogenicity or antibiotic resistance. Given that more than 400 different species of bacteria coinhabit a healthy human gut and more than 200 coinhabit human skin, Francisco Dionisio [ Genetics (2002) 162:1525-1532] investigated the ability of plasmids to undergo between-species conjugal transfer. The following data are presented for various species of the enterobacterial genus Escherichia. The data are presented as "log base 10" values; for example, - 2.0 would be equivalent to 10 -2 as a rate of transfer. Assume that all differences between values presented are statistically significant.
(a) What general conclusion(s) can be drawn from these data?
(b) In what species is within-species transfer most likely? In what species pair is between-species transfer most likely?
(c) What is the significance of these findings in terms of human health?
![Bacterial conjugation, mediated mainly by conjugative plasmids such as F, represents a potential health threat through the sharing of genes for pathogenicity or antibiotic resistance. Given that more than 400 different species of bacteria coinhabit a healthy human gut and more than 200 coinhabit human skin, Francisco Dionisio [ Genetics (2002) 162:1525-1532] investigated the ability of plasmids to undergo between-species conjugal transfer. The following data are presented for various species of the enterobacterial genus Escherichia. The data are presented as log base 10 values; for example, - 2.0 would be equivalent to 10 -2 as a rate of transfer. Assume that all differences between values presented are statistically significant. (a) What general conclusion(s) can be drawn from these data? (b) In what species is within-species transfer most likely? In what species pair is between-species transfer most likely? (c) What is the significance of these findings in terms of human health?](https://d2lvgg3v3hfg70.cloudfront.net/SM1220/11eb563d_4d87_0543_a8c8_55646084616c_SM1220_00.jpg)
(a) What general conclusion(s) can be drawn from these data?
(b) In what species is within-species transfer most likely? In what species pair is between-species transfer most likely?
(c) What is the significance of these findings in terms of human health?
Explanation
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(a)The rate of transfer from the donor c...
Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
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