In Drosophila, the two genes w and sn are X-linked and located at 20 m. u. apart. A female fly of the genotype w sn / w sn is crossed to a male from a wild type line. What percent of the male progeny will be of the w sn phenotype

Study the image of this rock.which characteristic best supports its formation from sedimentary processes? it has many layers.it is coarse-grained.its grain shape is round.its texture is non-banded.

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

Wich level of organization includes all the other levels or organizations