WebbThe polytene chromosomes of Rhynchosciara americana and R. hollaenderi, a pair of sibling species in the americana-like group of Rhynchosciara, were compared using a number of techniques, including in situ hybridization. With classical cytological techniques, the only differences observed were in the morphology of centromeric and telomeric … WebbThe genus Rhynchosciara is divided into 3 groups: a) the americana group, in which are included americana (Wiedemann), baschanti Breuer, villosa Rübsaamen, argentiniensis Lengersdorf and guimaraesi, sp. n.; b) the milleri group, containing milleri Pavan & Breuer, and grelleti sp. n.; c) the mathildae group, with brevicornis Rübsaamen, busaccai, sp. n., …

Rhynchosciara - Wikipedia

WebbRhynchosciara cognata [1] är en tvåvingeart som först beskrevs av Walker 1848. Rhynchosciara cognata ingår i släktet Rhynchosciara och familjen sorgmyggor . [ 1 ] [ 2 ] … Webb10 okt. 2016 · In this work we report the characterization of the Rhynchosciara americana histone genes cluster nucleotide sequence. It spans 5,131 bp and contains the four core histones and the linker histone H1. buy snowboard parts canada

Ribosomal RNA gene insertions in the R2 site of Rhynchosciara …

WebbAn analysis of profiles of Feulgen hydrolysis curves has been carried out in two heterochromatic (B-15 and C-11) and one euchromatic (C-1) regions of polytene chromosomes of salivary glands of 66 day old Rhynchosciara americana larvae. Differences among these three regions have been found mostly concerning the period of … Webb1 okt. 2004 · Although dosage compensation has not been directly demonstrated in Trichosia, its sex determination mechanism (based on chromosome differences as in … WebbTwo additional characteristics of Rhynchosciara make these flies excellent material for studies on the development of polytene chromosomes. 1.It is possible to observe the … buy snowboards canada