Shrink-swell potential in soils is a larger problem: Hint….you need clay to have problems with shrink-swell….which of these weathers into clay?)
A. in regions that have pink granite as a basement rock (feldspar rich)
B. in regions that have limestone as a basement rock (carbonate rich) C. in regions that have basalt as a basement rock (pyroxene rich)
D. in regions that have quartz sandstone as a basement rock (silica rich)
E. in regions that have diorite as a basement rock (augite and olivine rich)
F. in regions that have quartzite as a basement rock (silica rich

An egg, or a sack of flour

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.