S. Barbara McClintock found a genetic factor in corn called Ds (for Disassociator) which caused a high frequency of chromosome breakage at its locus. 1ocus is dependent upon another unlinked gene Ac (for Activator). When she tried to map Ac by association with genetic markers of the various corn chromosomes, it was impossible This breakage at the Ds In the same line of corn plants, some plants it mapped to one position, and in other plants, it mapped to a different position. Ds also constantly changed positions on the chromosomes, but only if Ac were present. Please explain the following behaviors of Ds and Ac in terms of transposable genetic elements. A. Ac locus movement. B. Ac-dependent movement of Ds locus. C. Chromosomal breakage at the Ds locus.
S. Barbara McClintock found a genetic factor in corn called Ds (for Disassociator) which caused a high frequency of chromosome breakage at its locus. 1ocus is dependent upon another unlinked gene Ac (for Activator). When she tried to map Ac by association with genetic markers of the various corn chromosomes, it was impossible This breakage at the Ds In the same line of corn plants, some plants it mapped to one position, and in other plants, it mapped to a different position. Ds also constantly changed positions on the chromosomes, but only if Ac were present. Please explain the following behaviors of Ds and Ac in terms of transposable genetic elements. A. Ac locus movement. B. Ac-dependent movement of Ds locus. C. Chromosomal breakage at the Ds locus.
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
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Transcribed Image Text:S. Barbara McClintock found a genetic factor in corn called Ds (for Disassociator) which
caused a high frequency of chromosome breakage at its locus.
1ocus is dependent upon another unlinked gene Ac (for Activator). When she tried to map
Ac by association with genetic markers of the various corn chromosomes, it was impossible
This breakage at the Ds
In the same line of corn plants, some plants it mapped to one position, and in
other plants, it mapped to a different position. Ds also constantly changed positions on
the chromosomes, but only if Ac were present.
Please explain the following behaviors of Ds and Ac in terms of transposable
genetic elements.
A. Ac locus movement.
B. Ac-dependent movement of Ds locus.
C. Chromosomal breakage at the Ds locus.
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