GENETICS OF NATURAL POPULATIONS. XVIII. EXPERIMENTS ON CHROMOSOMES OF DROSOPHILA PSEUDOOBSCURA FROM DIFFERENT GEOGRAPHIC REGIONS

Genetics of Natural Populations. III Gene Arrangements in Populations of Drosophila Pseudoobscura from Contiguous Localities.

EVENTEEN gene arrangements, related to each other as single or S multiple inversions, were described by DOBZHANSKY and STURTEVANT (1938) in the third chromosome of Drosophila pseudoobscura. Some of these gene arrangements have a wide, and others a narrow geographical distribution. In some localities the entire population is uniform, but more commonly several arrangements are found together. Dif...

Genetics of natural populations. XXXI. Genetics of an isolated marginal population of Drosophila pseudoobscura.

AYR (1954, 1959), CARSON (1955,1956,1959), BROWN (1957), DOBZHANM s ~ ~ (1957 and other publications), TOWNSEND (1952) and others have pointed out that the genetic structures of populations of the same species inhabiting the central and the peripheral parts of the distribution area are likely to be characteristically different on the average. Central populations have, by and large, mastered a g...

Genetics of Natural Populations. IV. Mexican and Guatemalan Populations of Drosophila Pseudoobscura.

Genetics of Natural Populations. I. Chromosome Variation in Populations of Drosophila Pseudoobscura Inhabiting Isolated Mountain Ranges.

N RECENT years there appears to be a growing interest in the I genetics of free-living populations, a subject hitherto almost untouched. Certain species of Drosophila prove to be very suitable for investigations in this field. TSCHETWERIKOFF (CHETVERIKOV), DUBININ and their collaborators in Russia, TIMOFEEFF-RESSOVSKY in Germany, GORDON in England, and STURTEVANT in this country have secured mu...

Molecular Population Genetics of Inversion Breakpoint Regions in Drosophila pseudoobscura

Paracentric inversions in populations can have a profound effect on the pattern and organization of nucleotide variability along a chromosome. Regions near inversion breakpoints are expected to have greater levels of differentiation because of reduced genetic exchange between different gene arrangements whereas central regions in the inverted segments are predicted to have lower levels of nucle...