If oil spill kills majority of zooplankton what is results

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.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

What best describes the dropping height of a ball that bounces back up to a height of 45 cm