According to the oral polio vaccination (OPV) hypothesis, the main (M) group of HIV-1 (the viruses responsible for the majority of global AIDS cases) emerged as a result of the vaccination of about ...

Phylogeny is the representation of the evolutionary history and relationships between groups of organisms. The results are represented in a phylogenetic tree that provides a visual output of ...

Phylogenetic relationships were reconstructed using molecular (nrDNA ITS and rpl16) and morphological data for eight species in three sections (Leptosyne, Pugiopappus, and Tuckermannia) of Coreopsis ...

The nuclear small subunit rRNA (18S) has played a dominant role in the estimation of relationships among insect orders from molecular data. In previous studies, 18S sequences have been aligned by ...

Snails, mussels, squids -- as different as they may look, they do have something in common: they all belong to the phylum Mollusca, also called mollusks. Researchers have now carried out research into ...

The cyclostomes with special reference to the diphyletic origin of the Petromyzontida and Myxinoidea / Erik Stensiö. Discussion / E.I. White -- The pteraspid Lyktaspis n.g. from the Devonian of ...

A molecular phylogeny of the Pacific clade of Cyrtandra (Gesneriaceae) reveals a Fijian origin, recent diversification, and the importance of founder events Object Details Author Johnson, Melissa A.