"Brown eye color is dominant over blue eye color. A couple with brown eyes have two sons, where Jack has blue eyes and John has brown eyes. John marries a woman, Laura, who also has brown eyes. However, Laura’s father has blue eyes and mother has brown eyes. John and Laura then have a son and a daughter, where the son has blue eyes and the daughter has brown eyes. Draw a pedigree showing all nine family members and indicate the genotype of each individual."

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