Answer :
If the first two children have blue eyes, then the probability of the third child having blue eyes is 3:1 (Option C).
What is a Punnett square?
A Punnett square is a diagram used in genetics to represent the probabilities to obtain a given genotype or phenotypic condition.
This diagram (Punnett square) shows how traits can be inherited by dominance relationships.
In conclusion, if the first two children have blue eyes, then the probability of the third child having blue eyes is 3:1 (Option C).
Learn more on the Punnet square here:
https://brainly.com/question/3522181
#SPJ1