MICROGEOGRAPHIC DIFFERENTIATION OF CHROMOSOMAL AND ENZYME POLYMORPHISMS IN DROSOPHILA PERSIMILIS
نویسندگان
چکیده
منابع مشابه
Divergence between the Drosophila pseudoobscura and D. persimilis genome sequences in relation to chromosomal inversions.
As whole-genome sequence assemblies accumulate, a challenge is to determine how these can be used to address fundamental evolutionary questions, such as inferring the process of speciation. Here, we use the sequence assemblies of Drosophila pseudoobscura and D. persimilis to test hypotheses regarding divergence with gene flow. We observe low differentiation between the two genome sequences in p...
متن کاملChromosomal polymorphisms of constitutive heterochromatin and inversions in Drosophila.
A simple technique for preparing mitotic metaphases from a larval ganglion of Drosophila is described. Parallel examination of polytene and metaphase chromosome groups shows that inversion polymorphism in chromosome 3 of D. recticilia from East Maui (Hawaii) manifests a one-to-one correlation with a metaphase karyotype polymorphism due to the presence of an extra heterochromatic portion. These ...
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Evidence of microgeographic and temporal genetic differentiation in natural populations of Drosophila subobscura is presented. The alcohol dehydrogenease locus was used as a genetic marker. Behavioral differences among the sexes and genotypes may explain these observations, although the molecular basis remains obscure.
متن کاملChromosomal Adaptive Polymorphism in Drosophila Persimilis. I. Life Cycle Components under near Optimal Conditions.
T least three principal facts concerning the adaptive functions of chromosomal A variants (inversions) in Drosophila populations have been established notably by DOBZHANSKY (1947, 1955), DOBZHANSKY and WALLACE (1953), DOBZHANSKY and LEVENE (1951), DOBZHANSKY and PAVLOVSKY (1953), and WALLACE (1953) : 1) Natural selection may build up particular genic complexes in a chromosomal variant adapting ...
متن کاملGenetics of Sexual Isolation between DROSOPHILA PSEUDOOBSCURA and DROSOPHILA PERSIMILIS.
OTWITHSTANDING their morphological similarity, Drosophila pseudoN obscura and Drosophila persimilis are distinct species. No hybrids between them have been recorded in natural populations, although the two species frequently occur together in the same habitats. Although in laboratory experiments species hybrids may be obtained without much difficulty, intraspecific matings succeed more easily t...
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ژورنال
عنوان ژورنال: Genetics
سال: 1977
ISSN: 1943-2631
DOI: 10.1093/genetics/85.4.681