Watersheds may be contaminated by fertilizers and other pollutants. When these substances enter a waterway, they can cause algal blooms,
which are rapid overgrowths of algae. When the algae die, the decay uses up a large portion of dissolved oxygen. Declining oxygen levels can
then cause large die-offs of animals in the waterway.
What will an algal bloom in a watershed most likely cause?

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)

i got you i did it ya know what it is just needing to fill this in for a quick task!

b is the answer and if you need further with anything message me