Location of an autosomal factor causing sterility in Drosophila mojavensis males carrying the Drosophila arizonensis Y chromosome
Location of an autosomal factor causing sterility in Drosophila mojavensis males carrying the Drosophila arizonensis Y chromosome
复制标题
导致携带亚利桑那果蝇 Y 染色体的莫哈文西斯雄性果蝇不育的常染色体因子的位置
作者：
A. Pantazidis;E. Zouros
莫哈韦果蝇（Drosophila mojavensis）雄性，其Y染色体被D. arizonensis，有不动的精子。如果第四对常染色体中的一个也被亚利桑那同源体所取代，精子活力就会恢复。我们目前的证据表明，第四条染色体的影响是由于一个单一的孟德尔因子和地图相对于该染色体的两个标记这个因素。这是一个重要的第一步，了解亚利桑那州的Y染色体和莫哈韦西斯第四染色体之间的不相容性的性质负责这种类型的后合子隔离这些密切相关的物种。
Drosophila mojavensis males whose Y chromosome is replaced by the Y of D. arizonensis, have immotile sperm. Sperm motility is restored if one member of the fourth autosome pair is also replaced by an arizonensis homologue. We present evidence that the effect of the fourth chromosome is due to a single Mendelian factor and map this factor relative to the two markers available for this chromosome. This is an essential first step towards understanding the nature of the incompatibility between the arizonensis Y chromosome and the mojavensis fourth chromosome responsible for this type of post-zygotic isolation between these closely related species.