Question: The five sentences (labelled 1, 2, 3, 4, 5) given in this question, when properly sequenced, from a coherent paragraph. Each sentence is labelled with a number. Decide on the proper order for the sentences and key in this sequence of five numbers as your answer.
Scientists have for the first time managed to edit genes in a human embryo to repair a genetic mutation, fuelling hopes that such procedures may one day be available outside laboratory conditions.
The cardiac disease causes sudden death in otherwise healthy young athletes and affects about one in 500 people overall.
Correcting the mutation in the gene would not only ensure that the child is healthy but also prevents transmission of the mutation to future generations.
It is caused by a mutation in a particular gene and a child will suffer from the condition even if it inherits only one copy of the mutated gene.
In results announced in Nature this week, scientists fixed a mutation that thickens the heart muscle, a condition called hypertrophic cardiomyopathy.
Only sentence 1 can start the paragraph. Since it talks about the scientists being successful for the first time in editing “genes in a human embryo to repair a genetic mutation” it links naturally to sentence 5 which after mentioning where the results were published continues to elaborate on the repair as they “fixed a mutation that thickens the heart muscle. So we get 1-5 at the beginning. The “hypertrophic cardiomyopathy” is elaborated further in sentence 2 as a “cardiac disease that causes sudden death”. So we get the sequence 1-5-2. Sentence 4 comes next as the “It” at the beginning of sentence 4 again refers to the disease and states its cause. So 1-5-2-4 is a sequence which is then concluded by sentence 3.