The allele for colorblindness is located on the X chromosome, so it isNormally, colorblindness is atraitand requires two copies of the allele. Sincehave twoX chromosomes, they do not exhibit any symptoms if they have onlyone colorblindness allele. However. sincehave onlyone X chromosome, they need to inherit the allele only once toexpress the trait.

The allele for colorblindness is located on the X chromosome so it isNormally colorblindness is atraitand requires two copies of the allele Sincehave twoX chrom class=