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A LEVEL Paper 1 Biology Question Paper 2020/Real Exam/ALL Questions
A LEVEL Paper 1 Biology Question Paper 2020/Real Exam/ALL 
Questions 
Answer ALL questions. 
Write your answers in the spaces provided. 
Some questions must be answered with a cross in a box . If you change your mind about an 
answer, put a line through the box and then mark your new answer with a cross . 
1 Tay-Sachs disease is a genetic disorder. 
(a) A couple without Tay-Sachs disease are expecting their second child. Their first 
child died from the disease. 
Use a genetic diagram to determ...