jhonnelmoncrief5732 jhonnelmoncrief5732
  • 23-01-2018
  • Biology
contestada

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

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jess1173 jess1173
  • 23-01-2018
beacuse men only have one X chromosome so beacuse colourblindness is found on the X chromosome then if the X inherited from his mother contains the allele for colourblind then he will be colourblind. women have two X chromosomes so even if they inherit one colourblind allele then if the other X contains a normal vision allele then they will be able to see normally.
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