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

This metal has very high malleability.

The sexology class is very interesting.

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

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

Cats are digitigrade animals, they walk on their toes.

His research mainly focuses on the plantigradism of mammals.

He learned about unguligradism in his zoology class.

She has polycystic ovary syndrome.

My younger brother caught the influenza.