The DNA found in cells’ mitochondria is passed down from mothers to their offspring. Sequences of such DNA, changing slowly with time, act as a molecular clock. It helps trace back the ancestors of ...

In the nineteenth and early twentieth centuries, mutton was an important source of protein in the Indian diet, but the production was low, and the quality of mutton was not good. The patterns of sheep ...

There are over 65 million sheep in India. These are important animals for the livelihoods of many marginal and landless farmers. A large proportion of mutton production takes place in rural and hilly ...