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Inheritance

INHERITANCE

Predicting genotypes                                                                                                                                                   

Sex cells only contain one allele each, so you need to find out your chances of the baby having CF through punnett squares. You can trace family history through pedigree diagrams.

Diseases

Monohybrid inheritance – characteristics are controlled by one gene

However, many genes usually control a specific characteristic

Caused by recessive allele – thalassaemia, albinism, phenylketonuria, sickly cell anaemia

Caused by dominant allele – Huntington’s, achondroplasia