In humans and many other animals, specific chromosomes determine sex. But how did researchers discover these so-called sex chromosomes? Throughout the many observations that led to this conclusion ...

The video describes Josie’s activities as ... they informed them that the possibility was very low as “Calico cats have two X chromosomes.” However, it was soon revealed that Josie ...

A very strange video was shared on social media. It showed a baby born from the romance of a cat and a rabbit. However, people are calling this video fake because it is biologically impossible for ...