Curly wing is recessive to straight wing in Drosophilia,. In a cross between true-breeding curly-and straight winged parental flies, there are 480 flied in the F2 generation. How many F2 flies have curly wings?

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.

Describe characteristics of a good respitory surface

The diagram shows a chicken embryo and a human embryo