ABO blood group inheritance demonstrates
Correct answer: C. Codominance and multiple alleles
- A. Complete dominance only
- B. Incomplete dominance
- C. Codominance and multiple alleles
- D. Sex linkage
Explanation
ABO system shows codominance (IA and IB both expressed in AB) and multiple alleles (IA, IB, i).
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About Gene Linkage and Crossing Over
Linked genes lie on the same chromosome and tend to pass together, unlike genes that assort independently on different chromosomes. The topic connects linkage with homologous pairing, crossing over during prophase I of meiosis, recombinant and parental offspring, and recombination frequency as an estimate of gene distance.
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