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Updated: Jun 29, 2026
10:07
Isolation of Giant Lampbrush Chromosomes from Living Oocytes of Frogs and Salamanders
Published on: December 5, 2016
The salivary gland chromosomes of Anopheles labranchiae Falleroni 1926
Parassitologia
|January 1, 1976
Abstract:
The salivary gland chromosomes of Anopheles labranchiae Falleroni, 1926 are described and figured. A. labranchiae is the sibling species of the maculipennis complex most closely related to A. atroparvus and the map of A. labranchiae is generally comparable to that of A. atroparvus. The chromosomal areas which are asynaptic in the hybrids between the two species are also described.
Related Concept Videos
01:51Lampbrush Chromosomes
In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops resemble the...
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops resemble the...
02:04Polytene Chromosomes
Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also regularly...