Which of the following is an example of overproduction in the marine environment? coral spawning female octopus protecting her eggs genetic variation in fish large claws in crabs

Answer is Coral spawning.

All the colonies of corals release their tiny eggs and sperms (gametes) at the same time into the ocean. This phenomena occurs once in year when temperature is favorable. This synchrony reproduction is referred as mass spawning. Mass release of gametes are crucial because the gametes of most corals are viable for only a few hours.

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)