Before I make a fuss here, this is only one question and it is only worth about 1-3 points of extra credit, but extra credit nonetheless. I am a big animal nerd and once I heard the question I immediately went through my encyclopedia in my brain If you could, please help me out. I have already tried searches on google, wikipedia, etc. We are starting a chapter about chromosomes and inherited traits. The question is: What animal's gender is NOT determined by chromosomes, but is determined right after birth? *Is not a Reptile. *Is a living organism *Is not a Hermaphrodite. Thanks for any help or suggestions everyone has. I will continue to search for the answer myself as well.