Question: In Drosophila, bright scarlet eyes are produced by homozygosity for a recessive allele st and normal red eves by the wildtype allele st . Black body is seen in flies homozygous for the recessive allele b, while all flies with the wildtype b allele have gray body. A dihybrid cross is performed, and 500 progeny are recovered. How many flies are expected in each phenotypic class? Here you may round the progeny numbers the nearest whole number. Cross St+stb+b with St+stb+b and predict the number of offspring.