Biology for IGCSE & O level - Inheritance (Section 7 - No. 14)
In a dihybrid cross involving two unlinked genes, what is the expected phenotypic ratio for the offspring of two heterozygous parents (AaBb x AaBb)?
9:3:3:1
1:1:1:1
3:1
1:2:1
Explicació
The classic 9:3:3:1 ratio is expected for a dihybrid cross with unlinked genes.