If businesses can improve the efficiency of the factors of production, it stands to reason that they can increase production and create higher quality goods at lower prices. Any increase in production leads to economic growth as measured by GDP.
So in your case, the answer would be Mendel's law of independent assortment
No their daughter will not have colorblindness but she may be heterozygous carrier for colorblindness because the genotype of their daughter will be either,
XRXR normal daughter.
XRXr heterozygous carrier of colorblindness.
