Abstract
To support genomic analysis of the endangered California condor (Gymnogyps californianus), a BAC library (CHORI-262) was generated using DNA from the blood of a female. The library consists of 89,665 recombinant BAC clones providing ∼14-fold coverage of the presumed ∼1.48-Gb genome. Taking advantage of recent progress in chicken genomics, we developed a first-generation comparative chicken–condor physical map using an overgo hybridization approach. The overgos were derived from chicken (164 probes) and New World vulture (8 probes) sequences. Screening a 2.8× subset of the total library resulted in 236 BAC-gene assignments with 2.5 positive BAC clones per successful probe. A preliminary comparative chicken–condor BAC-based map included 93 genes. Comparison of selected condor BAC sequences with orthologous chicken sequences suggested a high degree of conserved synteny between the two avian genomes. This work will aid in identification and characterization of candidate loci for the chondrodystrophy mutation to advance genetic management of this disease.
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