He was diagnosed with bipolar disorder.

This software has forward compatibility.

This software maintains backward compatibility.

He was diagnosed with congestive heart failure.

The success of this project is influenced by a lot of uncertainty.

He is receiving treatment for obsessive-compulsive disorder.

The sexology class is very interesting.

In mathematics, it is important to examine the parity of numbers.

Sex chromosomes play a crucial role in determining the sex of an organism.

Sex chromosomes play an important role in determining the sex of an organism.