What is the most challenging issue facing genome sequencing?

Nitrofurantoin used during the fifth week of pregnancy places the neonate at risk for which condition?

In fruit flies, gray bodies (g) are dominant over black bodies (g), and brown pigments (n) are dominant over yellow pigments (n). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring.

Which of these resources is used worldwide to make construction products, pottery, and porcelain