Please help
Dominant or recessive
And what is Ann’s genotype?

Recessive, and Bb

Explanation:

It must be recessive because according to Tom and Sandra's children they all don't have the trait. If it were dominant than they would all have it. If Ann does not have the trait but her and Micheal's child do that means bother her and Micheal must be Bb to have a bb child.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles