BiologyHeredity and variationJAMB
In a dihybrid cross between two double heterozygotes (AaBb × AaBb), the expected phenotypic ratio is
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Answer: C. 9 : 3 : 3 : 1
Independent assortment of two gene pairs gives 9 : 3 : 3 : 1.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.