Offspring of heterozygous parents have a 50-50 chance of getting a dominant vs. this type of allele
Since 
the Y (yellow) allele is dominant over the G (green) allele for pea plants, ... 
example (shown below), if the parent plants both have heterozygous (YG) 
genotypes,... [DOC] [TLE] Genetic problems -- [PAR] Chin fissure is controlled by a dominant allele and a smooth chin by a ...