How has the sequencing of human genome opened new windows for treatment of various genetic disorders. Discuss

NCERT Exemplar · Q54

Q. How has the sequencing of human genome opened new windows for treatment of various genetic disorders. Discuss amongst your classmates.

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Concept understanding — Scale And Scope

Let’s start with something you already know from daily life.

Imagine a small chai stall. The owner buys milk, tea leaves, sugar, and firewood. Every morning, she boils a small pot of milk, makes a few cups, and sells them. Now imagine a big tea company that runs a factory. It buys milk in tankers, tea leaves by the truckload, and uses industrial boilers. The company makes thousands of cups every hour.

The difference between the chai stall and the tea company is not just size. It is about two different kinds of advantage: scale and scope.

What is Scale?

Scale means doing more of the same thing. When a firm produces a larger quantity of a single product, its average cost per unit often falls. This happens because fixed costs — like rent, machinery, or a manager’s salary — get spread over more units. The chai stall pays the same rent whether it sells 50 cups or 100 cups. If it could sell 100 cups, the rent per cup would be half. That is the logic of economies of scale.

In the NCERT textbook (Class 11, Microeconomics, Chapter 3: Production and Costs), this is explained as the falling portion of the long-run average cost curve. As output increases, the firm can use more efficient technology, buy inputs in bulk at lower prices, and specialise labour. But scale has a limit. Beyond a point, diseconomies set in — coordination becomes harder, communication slows, and costs start rising again.

Important

Scale is about producing more of the same product to lower average cost. It is the reason big factories can sell goods cheaper than small workshops.

What is Scope?

Scope means doing more different things using the same resources. A firm enjoys economies of scope when it can produce two or more products together at a lower total cost than producing them separately.

Think of a dairy. It buys milk, processes it, and sells milk packets. But the same milk can also be turned into curd, butter, paneer, and cheese. The dairy already has the chilling plant, the pasteurisation equipment, the delivery trucks, and the sales network. Adding a new product — say, flavoured lassi — uses the same milk, the same factory, and the same distribution. The extra cost of making lassi is much smaller than starting a separate lassi company from scratch.

The NCERT textbook does not use the term “economies of scope” explicitly in the core microeconomics chapters, but the idea appears in the discussion of joint products and multi-product firms. In business studies (Class 12, Chapter 9: Financial Management), you see it indirectly when firms diversify into related products to use existing resources better.

Note

Scope is about producing different products together to share common inputs — raw materials, machinery, brand name, or distribution channels. It is why a company that makes soap also makes shampoo, and why a car company also makes spare parts.

Why It Matters

Scale and scope are not just textbook terms. They explain the structure of industries you see around you.

Scale explains why a single large steel plant can produce steel cheaper than a hundred small furnaces. It also explains why small shops survive — they offer personal service, location convenience, or customisation that a giant factory cannot.
Scope explains why a company like ITC sells everything from cigarettes to hotels to packaged foods. Each business shares some common resource — the brand, the distribution network, or the agricultural supply chain.

For a commerce student, understanding these concepts helps you answer questions like:

Why do firms grow bigger? …

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The sequencing of the human genome has transformed medicine by allowing doctors to pinpoint the exact genetic cause of a disorder, design targeted therapies, and predict disease risk long before symptoms appear.

The Human Genome Project, completed in 2003, gave us the complete map of all 3 billion base pairs in human DNA. Before this, treating genetic disorders was like trying to fix a car engine without knowing which part was broken — doctors could see the symptoms but not the root cause. Now, with the entire genetic code laid out, we can identify the specific gene or mutation responsible for a condition. This shift from symptom-based to gene-based medicine is the single biggest change in modern healthcare.

Consider a disorder like cystic fibrosis. Before the genome was sequenced, treatment focused on managing lung infections and digestive problems. Today, we know that a mutation in the CFTR gene causes the disease. This knowledge led to drugs like ivacaftor, which directly target the faulty protein produced by that gene. Instead of just treating symptoms, the medicine fixes the underlying molecular defect. That is a direct result of knowing the exact gene sequence.

The genome also opened the door to pharmacogenomics — the study of how your genes affect your response to drugs. A medicine that works perfectly for one person might cause severe side effects in another, simply because of a tiny difference in their DNA. For example, the drug warfarin (a blood thinner) requires different doses depending on variations in two specific genes. With genome sequencing, doctors can now prescribe the right dose from day one, avoiding dangerous trial-and-error. This is personalised medicine in action.

Note

The NCERT textbook highlights that the Human Genome Project has also helped in the diagnosis of genetic disorders before birth through prenatal genetic testing. This allows families to make informed decisions early.

Another major advance is in cancer treatment. Many cancers are caused by mutations in genes like BRCA1 (linked to breast cancer) or EGFR (linked to lung cancer). Sequencing a tumour’s genome can reveal which mutation is driving its growth. Drugs like trastuzumab (Herceptin) are designed to block the protein produced by the mutated HER2 gene in certain breast cancers. Without the genome sequence, we would never have known that these cancers are actually different diseases at the molecular level, requiring different treatments. …

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Q.How has the sequencing of human genome opened new windows for treatment of various genetic disorders. Discuss amongst your classmates.

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