Isolation and analysis of segregation distorting (SD) mutations in natural populations of Drosophila melanogaster
DOI:
https://doi.org/10.17533/udea.acbi.330154Keywords:
AislamientoAbstract
Drosophila melanogaster males carrying SD chromosomes (segregation distorter) were isolated from two contiguous municipalities of the department of Antioquia (Colombia), as follows: 9 SD males out of 220 analyzed from the municipality of Medellín, and 2 SD males out of 209 analyzed from the Guarne municipality. The above corresponds to an approximate frequency of 0.04 and 0.01 respectively and is in agreement with that reported in other parts of the world (0.01 to 0.06). The isolated mutations in Medellín and Guarne are strongly distorting of segregation since the k value is 1.00 or very close to it. Finally, all the SD mutations studied are associated with chromosomal inversions and four of them with lethal recessives, a fact that is also similar to the majority of SD mutations reported in the literature.
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