Some fruit flies are born with curly wings which makes them unable to fly. it has been shown that curly words are caused by a dominant gene which can be represented by the symbol w, while the recessive normal wing gene is represented by the symbol w. if a parent fly with the genotype ww is crossed with a parent of the genotype ww, what percentage the offspring will have curly wings?

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos