A punnett square is used to determine the a. Probable outcome of a cross b. Actual outcome of a cross c. Result of incomplete dominance x d. Result of meiosis

The correct answer is a. Probable outcome of a cross.<br /><br />A Punnett square is a diagram used in genetics to predict the possible genotypes of offspring resulting from a particular cross or breeding between individuals. It helps determine the probable outcomes of a genetic cross by showing the different combinations of alleles that can occur in the, 'Actual outcome of a cross,' is incorrect because a Punnett square predicts the probable outcomes, not the actual outcomes.<br /><br />Option c, 'Result of incomplete dominance,' is incorrect because a Punnett square can be used to predict the outcomes of incomplete dominance, but it is not specifically used for this purpose.<br /><br />Option d, 'Result of meiosis,' is incorrect because a Punnett square is used to predict the outcomes of genetic crosses, not the results of meiosis.