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NEETZoologyMolecular Basis of Inheritance

Which is the largest known human gene?

Options

  1. ADystrophin
  2. BChromosome 1
  3. CChromosome Y
  4. DRepetitive sequence

Correct answer

A. Dystrophin

Step-by-step solution

Some of the salient observations drawn from the human genome project are as follows: (i) The human genome contains 3164.7 million bp. (ii) The average gene consists of 3000 bases, but sizes vary greatly, with the largest known human gene being dystrophin at 2.4 million bases. (iii) The total number of genes is estimated at 30,000–much lower than previous estimates of 80,000 to 1,40,000 genes. Almost all (99.9 per cent) nucleotide bases are exactly the same in all people. (iv) The functions are unknown for over 50 p

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