Mendelian genetics?

the "wild type" is a simple way of saying the type that is most commonly found in nature. For example free earlobes is the wild type compared to attached purely because they are more popular in humans. FOr this problem, i would say that whichever phenotype (crinkled-wing or apterous) is the dominant is the wild type and the answer. The dominant allele always masks the recessive one, so all of the f1 will be heterozygous and dominant, expressing the wild type (dominant trait)