Q1. If the sequence of Species A differs from that of the other four species because of simple misalignment, then what should the computer software find when it compares the series of Species A to those of the other four species?

Q2. Calcium levels in Mr. Gallariani’s blood are dropping to dangerously low levels. The hormone PTH is released and soon blood calcium levels begin to rise. Soon after, PTH release slows. Is this an instance of a positive or negative feedback mechanism? What is an initial stimulus? What is the result?