NEETZoologyMolecular Basis of Inheritance
What are repeated sequences in the human genome?
Options
- ASequences that code for proteins
- BSequences that do not have any function
- CSequences that have a direct coding function
- DSequences that occur only once in the genome
Correct answer
B. Sequences that do not have any function
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