BI-344
Genetic crosses and ratios
Biology · Secondary 3 · Easy · Genetic crosses and ratios
A boy with sickle cell anaemia has genotype aa, where a is the recessive allele. His partner is homozygous normal (AA). What proportion of their children are expected to be carriers of sickle cell anaemia?
- 0%
- 25%
- 50%
- 100%
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