Evolution of the Y chromosome part 4

The forth part of Evolution of the Y chromosome is shown here. Human X and Y chromosomes are called sex chromosomes, because, among other things they determine sex. Y chromosome is quite smaller than the X. How did the Y chromosome become so small? This animation depicts the 300-million-year odyssey of the sex chromosomes that began when the pronto X and Y were an identical pair.

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Channels: Scientific Animations Genetics

Tags: Evolution Y chromosome

Uploaded by: ( Send Message ) on 06-08-2007.

Duration: 0m 38s