Biology for IGCSE & O level - Inheritance (Section 8 - No. 35)
What is the expected genotypic ratio from a cross between two individuals, one homozygous dominant (AA) and one homozygous recessive (aa)?
1:1
1:2:1
3:1
4:0
Giải thích
All offspring will be heterozygous (Aa), so the ratio is 4:0