Seeking a romantic partner poses a unique set of challenges.  One typically considers age, common interests, physical attractiveness, and similar life goals when looking for someone to form a relationship with.  But have you ever considered how much more difficult it would be if we were forced to also determine if our love interest was the same species as us?  Thankfully, humans are able to do this subconsciously.  Male Drosophi...

For many of us, middle school health class provided the basic biological and anatomical differences between males and females.  While we can recognize physical differences from a young age and learn about the differing reproductive organs in our pre-teen years, many sex-specific characteristics and behaviors are more difficult to understand; particularly those in the brain.  What causes structural and functional differences in t...

Today, many people meet their significant others through dating websites by electing to initiate a conversation after glancing at the biography and pictures posted by the other user.  Without realizing it, humans are able to determine the sex of their potential partners from these short descriptions...but how are other organisms able to make the same judgments? While humans typically use physical cues such as size, mannerisms, g...

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