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REDEFINITION OF THE PSEUDOAUTOSOMAL BOUNDARY OF THE CARICA PAPAYA SEX CHROMOSOMES.

Lappin, Fiona M
http://rave.ohiolink.edu/etdc/view?acc_num=miami1376205368

Abstract Details

2013, Master of Science, Miami University, Botany.
The sex chromosomes of Carica papaya are characterized by a small region of suppressed recombination flanked by two larger, recombining pseudoautosomal regions (PARs). To better understand the evolution of the sex chromosomes, I analyzed polymorphism across the entire X chromosome using next generation resequencing. In addition, I used traditional sequencing to analyze polymorphism at nine loci close to the PAR boundary. Two of these nine loci exhibit clear molecular signatures of X/Y-linkage. The other seven loci have autosomal patterns of polymorphism. By mapping these along the X chromosome, I was able to identify a ~95kb region where the boundary between the PAR and X lies, reducing the previous estimated size of the X by ~2Mbp. A clearly defined PAR border will allow for further investigation into the evolution of expansion of the PAR, especially when studied in a subject that has relatively young sex chromosomes like that of papaya.
Richard Moore (Advisor)
Micheal Vincent (Committee Member)
Chun Liang (Committee Member)
Bruce Cochrane (Committee Member)
63 p.
Biology; Botany; Genetics
Carica papaya; pseudoautosomal regions; sex chromosomes; X chromosome; PAR border; patterns of polymorphism;

Recommended Citations

Citations

  • Lappin, F. M. (2013). REDEFINITION OF THE PSEUDOAUTOSOMAL BOUNDARY OF THE CARICA PAPAYA SEX CHROMOSOMES. [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376205368

    APA Style (7th edition)

  • Lappin, Fiona. REDEFINITION OF THE PSEUDOAUTOSOMAL BOUNDARY OF THE CARICA PAPAYA SEX CHROMOSOMES. 2013. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1376205368.

    MLA Style (8th edition)

  • Lappin, Fiona. "REDEFINITION OF THE PSEUDOAUTOSOMAL BOUNDARY OF THE CARICA PAPAYA SEX CHROMOSOMES." Master's thesis, Miami University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376205368

    Chicago Manual of Style (17th edition)

miami1376205368
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© 2013, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.