Site-specific recombination systems all of the choices are correct i.e.
A. do not depend on extensive nucleotide sequence homology.
B. depend on enzymes that are often specific for sequences within the host.
C. are features of some viruses.
- An exchange between two specified sequences (target sites), either on the same DNA molecule or on two separate DNA molecules, is known as site-specific recombination.
- DNA sequences may be integrated, excised, or inverted as a result of the exchange.
- A site-specific recombinase that can work by itself or with the aid of additional components or enzymes shapes the DNA target during recombination.
- The recombinase is chemically bonded to the ends of the intermediate DNA after DNA breakage at the recombination site; when this process is reversed, the intermediate DNA is resealed to form the recombinant and the recombinase is released.
- During this recombination process, neither replication nor repair are necessary.
learn more about Site-specific recombination here: brainly.com/question/11458760
#SPJ4
Based on the salient features and the laboratories of this patient, this is a case of Crohn's disease. Crohn's disease is type of chronic inflammatory bowel disease or IBD along with ulcerative colitis. Crohn's disease usually presents with diarrhea, abdominal pain, and significant weight loss. Pathologically, it is characterized by "skip-lesions" or discontinuous granulomatous that occurs on all layers of the bowel (transmural); with the involvement of the whole gastrointestinal tract. Patients with Crohn's disease have a significant risk in developing colorectal cancer.
They essentially do what humans do. They eat the food, which in this case is decaying materials (detritus), break down the material chemically and mechanically, absorb the nutrients they need, then excrete the 'waste', which contains other nutrients. Soil is basically clay, sand, silt and decomposer's cr*p.<span />
B. Carbohydrates
examples; glucose, fructose
Mycorrhizae fungus increases the area of the root for absorbing water and minerals from the soil.
Mycorrhizae will develop a mutualism symbiosis with the plant since they both get a benefit. <span>Mycorrhizae will get food from the plant and plant got more water and minerals.
Parasitic fungus only steals food from the plant without giving any benefit to the plant.</span>
