PHYLOGENETIC COMPARISON OF SOME NEMATODE PARASITES OF PERIPLANETA AMERICANA BASED ON ELECTROPHEROGRAM AND SECONDARY RNA STRUCTURE.

Single stranded RNA molecules quickly fold due to hydrogen bonding mechanism if they are left in their environment. Helices which are made from the folding process known as stem. Only six (AU, GU, GC, UA, UG & CG) are stable to form base pairs among 16 possible ones. The nucleotide sequence of stems can vary and made variable RNA helical regions. The substitution of RNA bases are important in maintaining the secondary structure of RNA. DNA structure is not important to study the evolutionary models because that is double stranded due to which the base pairs in DNA does not give accurate results. So, secondary structure of RNA gives validate consequences in evolution of parasitic nematodes of Periplaneta americana. [ABSTRACT FROM AUTHOR]