Telomeric DNA sequences in beetle taxa vary with species richness.

ABSTRACT: Telomeres are protective structures at the ends of eukaryotic chromosomes, and disruption of their nucleoprotein composition usually results in genome instability and cell death. Telomeric DNA sequences have generally been found to be exceptionally conserved in evolution, and the most common pattern of telomeric sequences across eukaryotes is (T_xA_yG_z)_n maintained by telomerase. However, telomerase-added DNA repeats in some insect taxa frequently vary, show unusual features, and can even be absent. It has been speculated about factors that might allow frequent changes in telomere composition in Insecta. Coleoptera (beetles) is the largest of all insect orders and based on previously available data, it seemed that the telomeric sequence of beetles

SUBMITTER: Prusakova D 

PROVIDER: S-EPMC8233369 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature