humblle123 humblle123
  • 03-06-2017
  • Biology
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how are genes expressed for a particular trait

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20carpej
20carpej 20carpej
  • 03-06-2017
chromosomes are turned on or off. Ex. genes for karatin (which makes hair) are turned on when they are on top of your head, but are turned off on the palms of your hands.
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