1. A man with blood group A and a woman with blood group B have children. Their first child has blood group AB and the second child has blood group O. Which prediction about the blood groups of future children is CORRECT?
2. In a breeding experiment between a parent showing the dominant phenotype and a parent showing the recessive phenotype, the offspring showed equal proportions of the dominant and recessive phenotypes. Which ONE of the following statements is TRUE?
3. Scientists have created a genetically modified zebrafish, 'GloFish'. This fish has a gene that makes it glow in the dark. This gene was introduced into the species by ...