NEETZoologyMolecular Basis of Inheritance
What is the effect of large deletions and rearrangements in a segment of DNA?
Options
- AIt results in frameshift mutations
- BIt results in the insertion or deletion of multiple bases
- CIt results in the loss or gain of a gene and its function
- DIt results in the change of amino acid residue
Correct answer
C. It results in the loss or gain of a gene and its function
Step-by-step solution
The relationships between genes and DNA are best understood by mutation studies. You have studied about mutation and its effect in Chapter 4. Effects of large deletions and rearrangements in a segment of DNA are easy to comprehend. It may result in loss or gain of a gene and so a function. The effect of point mutations will be explained here. A classical example of point mutation is a change of single base pair in the gene for beta globin chain that results in the change of amino acid residue glutamate to valine. I