What is the purpose of a Punnett square?
A. Predicting the outcome of a coin toss
B. Predicting the number of children someone will have
C. Finding the genotype ratio for a cross
D. Finding what genes a parent has

Question

What is the purpose of a Punnett square?
 		A.	Predicting the outcome of a coin toss
 		B.	Predicting the number of children someone will have
 		C.	Finding the genotype ratio for a cross
 		D.	Finding what genes a parent has

blues · Answer

OK, the best way to approach these multiple choice questions is to use process of elimination. Let's work through the problem - to start, do any of the options strike you as not being the answer?

anonymous · Answer

A and B do not sound plausible

blues · Answer

I agree - A and B are not it. Telling between C and D is a little harder. But with a Punnett Square, you are given the parent's genotypes, and then use the square to figure out what genotypes the offspring can have, and in one ratios. So I would go with C as the correct answer.