This is called a monohybrid experiment. A test cross is performed between two plants that breed true for one trait, and the resulting trait for each offspring plant is determined The first, true-breeding generation, is called the parent, P generation.
Lumbar Degenerative Disc Disease Video. The natural history of lumbar degenerative disc disease is relatively benign. The pain tends to be intermittent, and although at times the pain may seem to be getting worse, the painful symptoms are generally not progressive. While the disc degeneration will progress, the low back pain and other symptoms do not tend to get worse with the progression of the degeneration.
There is a big caveat here. Remember, just because the patient may have cervical degenerative disc disease and degenerative facet disease does not mean they are going to have symptoms of neck pain, arthritis of the neck or other ailments such as a slipped disc.here is a big caveat here. Remember, just because the patient may have cervical degenerative disc disease and degenerative facet disease does not mean they are going to have symptoms of neck pain, arthritis of the neck or other ailments such as a slipped disc.