The underside of the crab has the gender differences.
And they resemble 2 famous buildings in Washington, DC.
Males have the Washington Monument on their belly
Females have the Capitol Building on their belly
One can identify a male crab from a female by looking at the body of the crabs. A female crab is slightly rounded like a dome and a male is pointed. And yes, a female crab has roe whereas a male crab does not have any.
NOW i know every thing reproduces but i never thought of a difference between male and female crabs???? the have different taste?? wow thats amazing ill have to check it out bcuz i love some steamed crab dipped in buttter yummmmmyy