Please answer fast Which statement is true about BRCA1 and BRCA2 genes?

A. These genes were discovered in 1953.
B. Cancerous tumors often form on these genes.
C. People can be tested for mutations on these genes.
D. Mutations of these genes lead to diabetes.

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.