Sally does not exercise. she is 78 years old. she tends to eat on the go and eats a lot of food that is high in calories and fat. she takes daily calcium and vitamin d supplements. she tends to avoid interacting with other people and spends most of her time alone. based on all the characteristics of her current lifestyle, what disease does sally’s lifestyle support?
a)alzheimer’s disease
b)osteoporosis
c)influenza
d)hantavirus

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The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.