In Drosophila, normal wings dominate the rudimentary ones. When two fruit flies with normal wings were crossed, 330 offspring were obtained, 80 offspring of which had rudimentary wings, and 250 were normal. Determine: 1) which feature is dominant; 2) what are the genotypes of parents and offspring.
1) The dominant feature is normal wings;
2) if the dominant trait is designated by the letter A, then the genotype of the parental individuals is Aa; genotypes F1 – 1 (AA): 2 (Aa): 1 (aa).
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