Answer:
The correct answer will be-
1. Genotype of parents (gametes)
2. Genotype of offsprings
Explanation:
Punnett square is the simple graphical way of understanding and predicting the mathematical probability of the inheriting traits of individuals developed by the Reginald Punnett in the 20th century.
The method was used by the Gregor Mendel in his experiments on pea to understand and predict the inheritance pattern.
The Punnett square is constructed by drawing grid perpendicular lines and then putting the genotype or the genetic contribution of one parent on the top side and another parent on the other side. Calculating the genotype of offsprings is represented inside the grid lines.