Treating Avascular Necrosis With Hip Surgery. When disease or injury prevents the blood supply from flowing freely to a bone, cells in the bone begin to die. As the bone withers, the surrounding cartilage begins to deteriorate, producing pain and other symptoms.
natural selection, crossing over, and independent assortment crossing over, independent assortment, and fertilization independent. assortment, fertilization, and natural selection fertilization, natural selection, and crossing over. Natural selection, crossing over, and independent assortment are methods of genetic recombination. Log in to see link for more information. Added 5/15/2015 2:21:24 PM. This answer has been confirmed as correct, not copied, and helpful.
Recombinant DNA (or rDNA) is made by combining DNA from two or more sources. In practice, the process often involves combining the DNA of different organisms. The process depends on the ability of cut, and re-join, DNA molecules at points identified by specific sequences of nucleotide bases called restriction sites.NA fragments are cut out of their normal position in the chromosome using restriction enzymes (also called restriction endonucleases) and then inserted into other chromosomes or DNA molecules using enzymes called ligases. Electron micrograph of Lambda (Î») phage releasing its DNA following an osmotic shock.