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Observations on chromosome-specific sequencing for the construction of cross-species chromosome homology maps and its resolution of human:alpaca homology.

Published version
Peer-reviewed

Type

Article

Change log

Authors

Ferguson-Smith, Malcolm A 
Borges, Ana 
Kasai, Fumio 

Abstract

BACKGROUND: The history of comparative chromosome mapping is briefly reviewed, with discussion about the problem that occurs in chromosome painting when size heteromorphisms between homologues cause contamination in chromosomes sorted by flow cytometry that are used in the preparation of chromosome-specific DNA probes. MAIN BODY: As an example, we show in the alpaca (Vicagna pacos) that sequencing of contaminated chromosome sorts can reveal chromosome homologies from alignment with human and mouse genome reference sequences. The procedure identifies syntenic blocks of DNA separated in the human karyotype that are associated in the closely related alpaca and dromedary (Camelus dromedarius) karyotypes. This example provides proof of principal for the validity of the method for comparative chromosome mapping. CONCLUSION: It is suggested that the approach presented here may have application in the construction of comparative chromosome maps between distantly related taxa, such as monotremes and mammals.

Description

Keywords

Alpaca homology, Chromosome mapping, Chromosome-specific sequencing, Comparative genomics

Journal Title

Mol Cytogenet

Conference Name

Journal ISSN

1755-8166
1755-8166

Volume Title

15

Publisher

Springer Science and Business Media LLC