What determines whether a metamorphic rock is foliated or non-foliated?

The areas of texture, appearance and the type of pressure applied during crystallization determines whether a metamorphic rock is foliated or non-foliated. Foliated rock is formed if the pressure applied to the recrystallizing rock is unequal. If the pressure applied to the recrystallizing rock is equal all over, a nonfoliated rock will be created.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle