Aristotle contributed to the science of taxonomy When he classifyed animals into Group

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 statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

What are genotypes? what are phenotypes?