So this true breeding red plant will produce only one type of sex cell, only one type of gamete, namely the Cr, where the C stands for color and R stands for the red color. So we have two of these slots which basically describe the same type of gamete that is produced by this particular true breeding red plan. And likewise, these are the two gametes that are produced by the true breeding white plan. So we have CW and CW where W stands for the color white. Now, when let's say this is the female, this is the male. When this excel combines with this sperm cell, we produce this heterozygous individual.