An F* strain, marked at 10 loci, gives rise spontaneously to Hfr progeny whenever the F factor becomes incorporated into the chromosome of the F* strain. The F factor can integrate into the circular chromosome at many points, so that the resulting Hfr strains transfer the genetic markers in different orders. For any Hfr strain, the order of markers entering a recipient cell can be determined by interrupted mating experiments. From the following data for several Hfr strains derived from the same F* strain, determine the order of www. markers in the F* strain.
An F* strain, marked at 10 loci, gives rise spontaneously to Hfr progeny whenever the F factor becomes incorporated into the chromosome of the F* strain. The F factor can integrate into the circular chromosome at many points, so that the resulting Hfr strains transfer the genetic markers in different orders. For any Hfr strain, the order of markers entering a recipient cell can be determined by interrupted mating experiments. From the following data for several Hfr strains derived from the same F* strain, determine the order of www. markers in the F* strain.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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An F* strain, marked at 10 loci, gives rise spontaneously to Hfr progeny
whenever the F factor becomes incorporated into the chromosome of the F*
strain. The F factor can integrate into the circular chromosome at many points,
so that the resulting Hfr strains transfer the genetic markers in different orders.
For any Hfr strain, the order of markers entering a recipient cell can be
determined by interrupted mating experiments. From the following data for
several Hfr strains derived from the same F* strain, determine the order of
markers in the F* strain.
ww
wwww
Hfr Strain
Markers Donated in Order
1
-Z-H-E-R>
– 0-K-S-R –>
– K-O-W-I >
– Z-T-I-W >
4
– H-Z-T-I>
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