Exemption from capital gains

Arunkumar (Chartered Accountant) (37 Points)

23 November 2013  
Assessee sold his ancestral Property and invested the amount in construction of his home and claimed exemption from Capital gains on sale of Ancestral Property. For additional funds required for his home construction, he sold the commerically let out house property in the name of his wife and invested that amount also in the home construction.
The land in which the new house being constructed is in the name of assessee only.
 
Can the wife of the assessee claim exemption from capital gains for sale of Commercial Property?
If so, what is the procedure ?