Biology for IGCSE & O level - Inheritance (Section 11 - No. 46)
If two heterozygous individuals are crossed (e.g., Gg x Gg), what proportion of the offspring will show the recessive phenotype?
0%
25%
50%
75%
説明
The genotypic ratio is 1:2:1 (GG:Gg:gg), so 25% will be recessive.