Chromosomal variations correlated with geographical distribution in circotettix verruculatus (Orthoptera)

摘要: The first spermatocytes of Circotettix verruculatus have eleven chromosomes. Five these are regularly atelomitic and three telomitic. other variable may both diads telomitic, atelomitic, or one diad telomitic while the is atelomitic. locus fiber attachment and, consequently, form chromosome constant for individual. point insertion known to be inherited according mendelian principles, is, therefore, a measure frequencies in group individuals. Samples five geographically different populations were studied with respect proportion tetrads. each chromosomes was compared that corresponding tetrads from localities. data subjected statistical analysis, significant differences between some groups found chromosomes. A possible correlation cytological among various localities formation geographical races subspecies discussed. An inversion portion chromosome, which causes an apparent, although not real, change attachment, suggested as origin effect heteromorphism synaptic mates on crossing-over considered.