WAEC Biology 2014 Theory — Question 12
Question 12 of 23 from the West African Examinations Council (WAEC) Biology 2014 Theory paper, with the correct answer and a full explanation.
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4. A survey to determine blood groups was carried out on 250 people living in a community (Blood group A: 8.0%, B: 14.0%, AB: 32.8%, O: 45.2%). 4(a)(i). Explain the term co-dominance. (2 marks)
Model answer
Co-dominance is a genetic condition in which two different alleles of a gene are both fully and separately expressed in the phenotype of a heterozygous individual, with neither allele being dominant or recessive over the other.
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