Chat with AI
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 26
Assume a hypothetical organism in which DNA replication is conservative. Design an experiment similar to that of Taylor, Woods, and Hughes that will unequivocally establish this fact. Using the format established in Figure, draw sister chromatids and illustrate the expected results establishing this mode of replication.
FIGURE The Taylor-Woods-Hughes experiment, demonstrating the semiconservative mode of replication of DNA in root tips of Vicia faba. (a) An unlabeled chromosome proceeds through the cell cycle in the presence of 3 H-thymidine. As it enters mitosis, both sister chromatids of the chromosome are labeled, as shown, by autoradiography. After a second round of replication (b), this time in the absence of 3 H-thymidine, only one chromatid of each chromosome is expected to be surrounded by grains. Except where a reciprocal exchange has occurred between sister chromatids (c), the expectation was upheld. the micrographs are of the actual autoradiograms obtained in the experiment.
FIGURE The Taylor-Woods-Hughes experiment, demonstrating the semiconservative mode of replication of DNA in root tips of Vicia faba. (a) An unlabeled chromosome proceeds through the cell cycle in the presence of 3 H-thymidine. As it enters mitosis, both sister chromatids of the chromosome are labeled, as shown, by autoradiography. After a second round of replication (b), this time in the absence of 3 H-thymidine, only one chromatid of each chromosome is expected to be surrounded by grains. Except where a reciprocal exchange has occurred between sister chromatids (c), the expectation was upheld. the micrographs are of the actual autoradiograms obtained in the experiment.
Explanation
Verified
Verified
If DNA replication were conservative, we...
Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Why don’t you like this exercise?
Other Minimum 8 character and maximum 255 character
Character 255
