Galactosemia is an inherited metabolic disorder caused by a mutation in the GALT gene. In a particular population, approximately 1 allele in every 80 for this gene is the mutated recessive allele.
Explain why only 1 person in 6400 in this population is born with galactosemia.
76 exam-style questions on AQA GCSE Biology 6.1 Reproduction, covering 6.1.1 Sexual and asexual reproduction, 6.1.2 Meiosis, 6.1.3 Advantages and disadvantages of sexual and asexual reproduction, 6.1.4 DNA and the genome, 6.1.5 DNA structure, 6.1.6 Genetic inheritance, 6.1.7 Inherited disorders, and 6.1.8 Sex determination. Each one has a worked solution and a mark scheme showing where the marks go.