B1a i 12Jan1a Hugh has a DNA test. This tests for genes that may increase his risk of developing certain diseases. (a) Complete the sentence to describe a gene. Put a tick (✓)next to the correct answer. A gene is … a pair of chromosomes. … a code for making DNA. … a short section of protein. … an instruction for making a protein. … [1] B1b i. 12Jan2 Adam is similar to his parents in some ways but identical to neither. Explain why Adam is similar to his parents but not identical to either of them. Your answer should refer to chromosomes • sex cells • alleles. • [3] B1 ci. 13Jan2 Ali and Mary do not have cystic fibrosis, but their baby does. (a) What does this tell us about Ali and Mary’s genes for this disorder? [1] B1 hsw i. 13Jan2 Ali and Mary consider whether or not to have another These are some of the questions that they could consider before making their decision. A How much will it cost to have another child with cystic fibrosis? B What is the chance of another of ours having cystic fibrosis? C If we find that the foetus has cystic fibrosis should we have a termination?
B1a i 12Jan1a Hugh has a DNA test. This tests for genes that may increase his risk of developing certain diseases. (a) Complete the sentence to describe a gene. Put a tick (✓)next to the correct answer. A gene is … … a pair of chromosomes. … a code for making DNA. … a short section of protein. … an instruction for making a protein. [1] B1b i. 12Jan2 Adam is similar to his parents in some ways but identical to neither. Explain why Adam is similar to his parents but not identical to either of them. Your answer should refer to • chromosomes • sex cells • alleles. [3] B1 ci. 13Jan2 Ali and Mary do not have cystic fibrosis, but their baby does. (a) What does this tell us about Ali and Mary’s genes for this disorder? [1] B1 hsw i. 13Jan2 Ali and Mary consider whether or not to have another These are some of the questions that they could consider before making their decision. A How much will it cost to have another child with cystic fibrosis? B What is the chance of another of ours having cystic fibrosis? C If we find that the foetus has cystic fibrosis should we have a termination?
B1-You-and-Your-Genes.docx