THE EVOLUTION OF SINGLE-COPY NUCLEOTIDE SEQUENCES IN THE GENOMES OF GOSSYPIUM HIRSUTUM L.

Persistent Link:
http://hdl.handle.net/10150/282569
Title:
THE EVOLUTION OF SINGLE-COPY NUCLEOTIDE SEQUENCES IN THE GENOMES OF GOSSYPIUM HIRSUTUM L.
Author:
Geever, Robert Francis
Issue Date:
1980
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Nuclear DNA content of the amphidiploid, G. hirsutum, and two closely related diploid species, G. herbaceum var. africanum and G. raimondii, was ascertained by the reassociation kinetics of 250 nucleotide DNA fragments. Between diploid species the difference in chromosome size is attributed largely to variation in repetitive sequences, where there has been a change in both frequency and complexity. The evolution of single-copy DNA sequences by cross hybridizations among species reveals: (1) a high degree of sequence conservation between diploid species, showing 78% duplex formation under standard criterion and 6% sequence mismatch upon thermal denaturation; and (2) greater than 95% duplex formation between the diploid species and the amphidiploid with less than 1% single-copy sequence mismatch. The latter findings are consistent with an early Pleistocene origin for the tetraploid cottons.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Cotton -- Genetics.; Plant genetics.; Gene mapping.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Genetics
Degree Grantor:
University of Arizona
Advisor:
Katterman, Frank

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleTHE EVOLUTION OF SINGLE-COPY NUCLEOTIDE SEQUENCES IN THE GENOMES OF GOSSYPIUM HIRSUTUM L.en_US
dc.creatorGeever, Robert Francisen_US
dc.contributor.authorGeever, Robert Francisen_US
dc.date.issued1980en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractNuclear DNA content of the amphidiploid, G. hirsutum, and two closely related diploid species, G. herbaceum var. africanum and G. raimondii, was ascertained by the reassociation kinetics of 250 nucleotide DNA fragments. Between diploid species the difference in chromosome size is attributed largely to variation in repetitive sequences, where there has been a change in both frequency and complexity. The evolution of single-copy DNA sequences by cross hybridizations among species reveals: (1) a high degree of sequence conservation between diploid species, showing 78% duplex formation under standard criterion and 6% sequence mismatch upon thermal denaturation; and (2) greater than 95% duplex formation between the diploid species and the amphidiploid with less than 1% single-copy sequence mismatch. The latter findings are consistent with an early Pleistocene origin for the tetraploid cottons.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectCotton -- Genetics.en_US
dc.subjectPlant genetics.en_US
dc.subjectGene mapping.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineGeneticsen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorKatterman, Franken_US
dc.identifier.proquest8027749en_US
dc.identifier.oclc8680307en_US
dc.identifier.bibrecord.b18059661en_US
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