Probe Single-stranded DNA or RNA molecules of specific base sequence, labeled either radioactively or immunologically, that are used to detect the complementary base sequence by hybridization. Prokaryote Cell or organism lacking a membrane-bound, structurally discrete nucleus and other subcellular compartments. Bacteria are prokaryotes. Promoter A site on DNA to which RNA polymerase will bind and initiate transcription. Proteins are required for the structure, function, and regulation of the bodys cells, tissues, and organs, and each protein has unique functions.
Examples are hormones, enzymes, and antibodies.
A combination of DNA molecules of different origin that are joined using recombinant DNA technologies. Under appropriate conditions, a recombinant DNA molecule can enter a cell and replicate there, either autonomously or after it has become integrated into a cellular chromosome. The process by which progeny derive a combination of genes different from that of either parent. In higher organisms, this can occur by crossing over. Regulatory regions or sequences A DNA base sequence that controls gene expression.