How do you get a whole pair inside of pair brandy?

Pair is a singular noun, so when it's the subject it takes a singular verb: pair has "This pair of chickens has a bad attitude." previous answer misses the point entirely: it depends on how it is...

Either pair or pairs is correct, but the usage will determine which. Pants, shoes, gloves and some other things come in pairs, and in general usage, a pair is two (as you probably already knew)....

Pants, socks, dice, eyes, mittens

the pair is made up of one chromosome from a female and another from a male

a and t c and g