Words similar to ltr

Example sentences for: ltr

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Genomic analysis of the sequenced y; cn bw sp strain of Drosophila melanogaster identified a full-length Burdock LTR retrotransposon located just 3' to the cathD gene and a 359bp LTR fragment (complete LTR is 659 bp) of an Antonia LTR retrotransposon [ 15 ] located within an intron of the Cht3 gene (Figure 1).
These results strongly suggest that conservative selection has been operating on the LTR containing intron associated with the Drosophila Cht3 gene over the past 2.7 million years.
It is formally possible that the presence of the Antonia LTR within the Cht3 intron was the result of a chance fixation event prior to the expansion of D. melanogaster around the world.
This region spans 264 bp of the 359 bp Antonia LTR fragment.
Appropriate pairs of gene and element primers were used to detect the presence or absence of the respective retrotransposon inserts associated with each gene in strains representing 12 geographically dispersed populations of D. melanogaster . The results presented in Figure 2and Table 1demonstrate that while the Burdock insertion located just 3' to cathD gene is not present in any of 12 strains representing a geographically diverse sampling of natural populations, the Antonia LTR fragment located in the intron of the heterochromatic Cht3 gene is fixed in all 12 strains tested.