When a red shorthorn cow is crossed with a white bull, the offspring carry a mixture of red and white hairs called roan. This illustrates
Correct answer: D. codominance
- A. complete dominance
- B. linkage
- C. crossing over
- D. codominance
Explanation
Both alleles express themselves side by side in the heterozygote, producing distinct red and white hairs rather than a blended colour. In incomplete dominance, by contrast, the phenotype is an intermediate such as pink.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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