Gene therapy—altering the genetic code to repair or replace damaged genes—is a promising field for genetic conditions such as sickle cell anemia and Huntington’s disease. List one scientific question for each condition that could help guide gene therapy research for those diseases.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Describe characteristics of a good respitory surface