Which dunes are formed under varying wind directions, but are dominantly parallel to the average direction?

Many different types of sand dunes exist, all of which are formed due to varying directions of the winds. Some predominant types of sand dunes are barchan dunes, linear dunes, transverse dunes, parabolic dunes and star dunes.
The sand dunes that are formed under winds coming from different directions but take the direction of the prevailing wind are known as transverse dunes.

Idont understand i'm sorry

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.