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Genetic Diversity of Mitochondrial DNA D-loop Sequences in Huili Black Goat
Authors:ZHANG Wen-li
Abstract:To explore the genetic diversity and origin for genetic resource protection of Huili Black goat, the mitochondrial DNA (mtDNA) D-loop was investigated. mtDNA D-loop sequences of 41 goats were analyzed by PCR, sequencing techniques, and biological information and the phylogenetic trees were constructed. The mtDNA sequences of the Huili Black goat ranged from 1211 to 1213 bp, and 2 sequences were 1211 bp, 29 sequences 1212 bp, and 10 sequences 1213 bp. The content of A+T (60.1%) was higher than one of G+C (39.9%). There were 9 haplotypes, and the haplotype diversity was 0.842+0.00368. The nucleotide diversity was 0.01542+0.00034. The phylogenetic analysis showed that Huili Black goat was distributed in a branch, and were closed to Jianchang Black goat, Chengdu Ma goat, Jintang Black goat, Guizhou White goat, Guizhou Black goat, but they were less related to Capra falconeri. Huili Black goats had rather abundant genetic diversity, and were greatly affected by other goat breeds in history.
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