Plant Size and Culture. Liriope muscari is the taller of the two plants, growing to 18 inches with a spread of up to 12 inches. Spicata is generally shorter, though in optimum growing conditions it may get as tall as 15 inches. The plant can spread up to 2 feet. Both plants spread and reproduce by rhizomes underground.
The unique colony holding the gene sequence of interest is identified by comparing the main plate with bacterial colonies, the nitro cellulose membrane and the X-ray film. The identified colony carrying gene sequence of interest can then be extracted from the plate and grown as a step to amplify the gene of interest. Using expression vectors in creating cDNA library makes the screening of the cDNA library much easier which is done with the help of specific antibodies.
Discovering Addiction Genes. Many genes with roles in addiction were identified with the help of animal models, especially mice. Because the reward pathwayâand many of the genes that underlie itâfunctions in much the same way in mice as it does in people, mice are leading the way in identifying addiction genes. When researchers discover a gene that plays a role in addiction in a model organism, such as mouse or fruit fly, they can then identify the counterpart gene in humans by looking for similar DNA sequences. To the right, you will find a sampling of some of the genes suspected to play a role in addiction, many of which were identified first in animals. 1  The A1 allele of the dopamine receptor gene DRD2 is more common in people addicted to alcohol or cocaine.