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When did X turn into Y? Homosapien history

I have heard that the Y chromosome comes from the an X chromosome (in human beings), and if this is so, then how far back, and what type of creature where we, when this might have been so?
Question asked by: trigger

Asked on: 18 Mar 2010

The Y chromosome is the one that gives the male characteristics and ensures that the embryo becomes a male child not a female one.

The Y comes from the man as the woman only has the X chromosome.

In terms of where they came from don't all chromosomes come from humans in the sense that they come from your forebears...

By: daveyc
Replied at: 21 Mar 2010
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homosapien  history  

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