Genetics Problem 2?

Question

In a cross between a squash plant homozygous for yellow fruit color and disk fruit shape and one homozygous for white fruit color and sphere fruit shape, what will be the appearance, as to color and shape of fruit, of F1? Of the F2 ( second generation of offspring)? Of the offspring of a cross of the F1 with a yellow, disk parent? With a white, sphere parent?

Can you tell me the answer and how i need to do it?

in the summer squash, white fruit (W) is dominant over (w) yelow, and "disk" fruit shape (D) is dominant over "sphere" shape (d)

Answer 1

F1: wwDD x WWdd
Punnett square: wD x Wd = 100% DdWw (100% Disk,White)

F2: This is a typical Mendelian dihybrid cross:
DdWw x DdWw
Make a square, four boxes across and four boxes vertical (16 total boxes)
Across top of square: DW,Dw,dW,dw
Same letters along vertical part of square.
Fill-in the boxes.
Result:
9-disk,white
3-disk,yellow
3-sphere,white
1-sphere,yellow


In the cross between the F1 and yellow ,disk:
DdWw x Ddww (or DDww)

In the cross, F1 with white, sphere:
DdWw x ddWw (or ddWW)

Answer 2

impossible to answer unless you know which traits are dominant.
the F1 generation will show all dominant characteristics. The F2 generation will show 75% dominant characteristics to 25% recessive.

Answer 3

I can't tell you the answer cuz i don't have the time to make an extended punnet square, but try doing one of those. then for the generation thing, try a combination of punnet squares and maybe a pedigree chart