1) A White eye (w) female Drosophila is crossed with diminutive (dm) males. The F1 wild type females are then crossed to the double mutant, white eye, diminutive males and produce the following:

white eye, normal size 487
normal eye, diminutive 475
normal eye, normal size 19
white eye, diminutive
12

Could you show me the crosses using the proper symbols?
What is the map distance between white and diminutive?

2) You have a line of Drosophila that has both yellow body and vermillion (v) eyes. Can you show the crosses, using the proper symbols to construct a line of flies that has only yellow bodies. I believe they are both X linked.
If you could help me with that would be great

Sure, let's start by showing the crosses using the proper symbols.

1) Crosses for the first scenario:
w+ (white eye) female x dm (diminutive) male -> F1 generation (wild type females)

F1 wild type females x w dm males -> F2 generation:
- white eye, normal size (w+ w dm): 487 flies
- normal eye, diminutive (w+ w dm): 475 flies
- normal eye, normal size (w+ w+ dm+): 19 flies
- white eye, diminutive (w w dm): 12 flies

2) Crosses for the second scenario:
Yellow body (y) and vermillion eye (v) are both X-linked traits in Drosophila. To construct a line of flies that has only yellow bodies, we need to perform the following crosses:

y v females x y+ v males
- The females in the first generation will carry both yellow body and vermillion eye traits (y v/y+ v).
- The males in the first generation will have a wild-type body (y+ v/y+ v).

Next, we need to perform a reciprocal cross:
y v females x y v+ males
- The females in the second generation will carry the yellow body trait (y/y v+).
- The males in the second generation will carry the vermillion eye trait (y v/y+ v).

By continually crossing the females carrying the yellow body trait (y/y) with males carrying the vermillion eye trait (y v/y+ v), you will eventually obtain a line of flies that has only yellow bodies.

It's important to note that these crosses assume simple Mendelian inheritance patterns and do not account for the potential influence of other genetic factors or considerations such as genetic linkage or epistasis.