Both parent plants are heterozygous ss for an allele that determines seed shape.

F1 monohybrid cross. All offspring are yy and have yellow seeds. This cross only examined one trait however many more traits can be observed at once. The results that he obtained and that you would predict for this experiment are.

The figure above represents a monohybrid cross of f1 hybrid plants. The individuals in the cross all had one allele for green pods and one allele for yellow pods making them hybrids. Homozygous recessive ss plants have dented seeds.

Spherical seeds are the dominant characteristic mendel collected the seeds from this cross grew f1 generation plants let them self pollinate to form a second generation and analyzed the seeds of the resulting f2 generation. Presence of the dominant allele s in homozygous ss or heterozygous ss plants results in spherical seeds. Modern scientists now describe the cross of mendels f1 generation as a monohybrid cross.