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Why is a son who recivers the allele for colorblindness from his mother always colorblind?

Tags: Allele, Colorblindness, Science Book

This entry was posted on Saturday, March 21st, 2009 at 21:26 and is filed under Who we are. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “Why is a son who recivers the allele for colorblindness from his mother always colorblind?”

1. alyskim Says:
   March 24th, 2009 at 20:53

   The gene for colourblindness is on the X chromosome. If a son gets a colour blind gene from his mother, he will be colour blind because he only has one X chromosome and therefore cannot get a “non-colour-blind gene” from his father.

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