The instructions of the cell are decoded in a molecule called DNA nucleic acid which provides the code for every metabolic function of the cell.
The part of the DNA which codes for a specific trait is known as the gene which is present in various forms called alleles. These alleles are present on a specific location on DNA called locus.
The alleles express a trait only when the two alleles for the same trait on each chromosome complement each other after fertilization. Therefore, the allele is the correct answer.
By it alleles, and there genes what one plant have the other may not have see it all depends on the out come of the alleles-genes that they come up with .