Hello Shreyans,

what is the goal?

usually when you search for a protein-coding exons, the software also gives to you the introns sequences.

you have a lot of good online software to do this. but you also can search for potential splice sites...

give a look to this site:

http://www.molquest.com/molquest.phtml?group=index&topic=gfind

good luck

i was given a long nt seq and asked to find the CDS in it.. It was told that the nt seq contains a gene from arabidopsis thaliana..

Thank you for the suggestion