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%
Explanation
The genotypic ratio is 1:2:1 (GG:Gg:gg), so 25% will be recessive.
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