This picture shows normal blood cells, which are round, and sickle cells, which appear much longer. People with sickle cells suffer from sickle cell anemia, which is an inherited disease. It is caused by a change in a gene responsible for production of hemoglobin. This type of change is known as a(n) es ) A) cancer. B) genotype. mutation. D) acquired characteristic.

Where in the body does maturation of T lymphocytes take place? A) Lymph node B) Bone marrow C) Spleen. D) Thymus

Researchers are using lentivirus to deliver fetal hemoglobin genes to individuals with sickle cell anemia.This is an example of ………. Therapy?

Select all of the sentences below that correctly describe the role of a healthy diet and lifestyle in cancer risk and progression. Select all that apply. A)Dietary supplements are definitively linked to lowering cancer risk. B)Consumption of processed meat containing nitrates and nitrites may increase a person’s risk of certain cancers. C)Grilling is a healthy cooking method; therefore, the consumption of all types of grilled meat will help reduce the risk of cancer. D)Folate may help reduce the incidence of colon cancer. E)Fruits and vegetables contain phytochemicals, antioxidants, and dietary fiber, all of which help reduce the risk of certain cancers.