In insects, polytene chromosomes are commonly found in the salivary glands; they are also referred to as "salivary gland chromosomes". The large size of the chromosome is due to the presence of many longitudinal strands called chromonemata; hence the name polytene (many stranded). They … See more Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary glands of insects. Polytene … See more In addition to increasing the volume of the cells' nuclei and causing cell expansion, polytene cells may also have a metabolic advantage as multiple copies of genes permits a high level of gene expression. In Drosophila melanogaster, for example, the chromosomes of … See more • Baudisch W (1977). "Balbiani ring pattern and biochemical activities in the salivary gland of Acricotopus lucidus (Chironomidae)". … See more • [1] (87A&C Heat-shock puffs) • [2] (High resolution spreads) • Phaseolus Polytene chromosomes (Plants) See more Polytene chromosomes were originally observed in the larval salivary glands of Chironomus midges by Édouard-Gérard Balbiani in … See more Polytene chromosomes are present in secretory tissues of dipteran insects such as the Malpighian tubules of Sciara and also in protists, plants, mammals, or in cells from other insects. Some of the largest polytene chromosomes described thus far occur in larval salivary gland … See more WebNov 25, 2024 · Small deer with giant fusion chromosomes. Muntjacs are deer species with dramatic differences of chromosome numbers between species, ranging from 2n=6 or 7 to 2n=46. A new study of several muntjacs' genomes uncovers the mechanism of such great chromosome number changes within only 3 million years and its impact on the genome.
Composition and Structure of Giant Chromosomes - ScienceDirect
Webpol·y·tene chro·mo·some. a stage of chromosome division that forms the giant chromosome found in the salivary gland of dipterous insects; the great width is the … WebJul 26, 2024 · Dec. 4, 2024 — Researchers have discovered the largest known avian sex chromosome. The giant chromosome was created when four chromosomes fused together into one, and has been found in two ... terrace trivandrum kazhakootam menu
(PDF) High-quality chromosome-level genome assembly of the …
WebJan 25, 2024 · ‘Giant chromosome’ was first given by Winchester; they were also named a mega chromosome. Giant chromosomes are of two types: a) Lampbrush … WebAug 3, 2024 · To explore this issue, two different groups tried an audacious experiment: using genome editing, they gradually merged a yeast's 16 chromosomes down to just one giant molecule. And, unexpectedly ... batman begins ps2 gameplay