What is the genotypic ratio of the offspring of a Aa x Aa cross?
• 3 homozygous dominant: 1 heterozygous
• 1 homozygous dominant: 1 heterozygous: 2 homozygous recessive
• 1 homozygous dominant: 2 heterozygous: 1 homozygous recessive
• 2 homozygous dominant : 1 heterozygous : 1 homozygous recessive