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

We have a responsibility to protect the biodiversity of the Earth.

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.

This material has high corrosion resistance.

He was diagnosed with bipolar disorder.

He is writing a thesis on monotheism.