A biologist discovers two populations of an insect species whose members appear identical. Members of one population are found in the leaf litter deep within the woods. Members of the other population are found in the grass at the edge of the woods. The biologist decides to designate the members of the two populations as two separate species. Which species concept is this biologist most closely utilizing?

MCQs on the structure and function of DNA and RNA and how these nucleic acids are used to form proteins, and their importance in genetics and inheritance. Also covers DNA replication, transcription, gene expression, mutation and repair, recombination, molecular techniques, and appropriate molecular models.