Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
A list holds transgenic animals. NCERT says that over of the transgenic animals that exist are mice. Suppose that the list follows this statement.
The chapter pairs an application with an organism, a product and a tool. Bt cotton: Bacillus thuringiensis, genes cryIAc and cryIIAb, cotton bollworms. Corn borer: cryIAb. Insulin: chains A and B, the C peptide removed, E. coli, 1983. Hepatitis B vaccine: yeast. ADA gene therapy: lymphocytes, retroviral vector, 1990. Alpha-1-antitrypsin: emphysema. Rosie: 1997, human alpha-lactalbumin. Basmati, neem and turmeric: biopiracy and patents.
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. animals. More than are mice.
Plan. Take for the least number of mice. The rest is the most that can be of other species.
Step 1. Mice. , so at least are mice.
Step 2. Others. , so at most are of other species.
Answer: ; .
Check. .
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