An arab woman who is one of several wives, or an american woman who is the only wife (or who remains single to pursue a profession or career) are examples of: :
a. sex
b. political
c. gender
d. all of the above
e. none of the above

What is the identity of the planets?

Why are common names a problem for scientist?

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?