i didn't take biology
atadir atadir 51-55, M 4 Answers Nov 29, 2012 in Hobbies

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Meiosis...and I am waaaay tired...

It seems to be evolutionarily advantaged to have two (major) sexes for reproductive purposes...and fixing those sexes genetically.

...I did not realize there is such a thing as ZW sex determination genes...learn something new every day...

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your chromosomes dictate all of your physical attributes. If they were the same...we'd all be the same. At least the they are the only ones with Y's.(that's if I follow your question.)

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I had mine altered to a K in memory of my dear old mum. No hang on, that was a tattoo. Whats the question? Crumbly wotnow?

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Y, do you ask?

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