Suppose that a scientist deletes the AAUAAA consensus sequence, the poly(A) tail, or the 5' cap from pre‑mRNAs in an mRNA. She then observes the effects on RNA regulation. Assign each RNA regulation consequence to the type of deletion most likely to result in the consequence.

1. AAUAAA deletion
2. Poly(A)‑tail deletion
3. 5' cap delatation

A. Introns are not removed from pre m-RNA
B. The pre-mRNA is not cleaved at the cleavage site
C. The mRNA is not transported to the cytoplasma

What claim did thorne make? what evidence supported his claim?

The tasmanian devil, a marsupial carnivore, is facing extinction due to devil facial tumor disease (dftd) which causes bulging cancerous lumps and lesions to erupt around the face and neck — often causing enough deformation to make seeing or eating difficult. dftd has evolved into a contagious cancer, a trait that is unique among cancers. devil mating behavior involves biting around the head and neck, allowing cells from one individual — especially cells from the crumbly dftd tumors — to be transferred to the wounds or face of a new individual. this marsupial was once found across australia, but sea levels rose, isolating the tasmanian population, while the australian population went extinct. what would be an outcome of genetic isolation that is likely to have impacted the spread of dftd? a) reduced territory puts diseased individuals in greater contact with non-diseased ones. b) inbreeding results in less variation in facial features so the cancer is generally fatal. c) genetic isolation has made it difficult for scientists to develop a vaccine against dftd. d) the lack of genetic variation in the immune system of tasmanian devils minimizes resistance to the disease.

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.