DeAR ALL

Recently I have recieved an offer letter for PhD in topic of biotechnology related to gene expression studies in reputed university.

My query is
WHAT SHOULD BE THE CRITERIA FOR PROJECT APART FROM SELF INTRST?

1) TECHNIQUES INVOLVE?
2) TOPIC OF RESEARCH
3) PROSPECTS OF RELATED TOPIC IN NEAR FUTURE.?
4) CAN I SWITCH MY CURRENT RESEARCH TOPIC TO ANOTHER IN POST DOC?

After I finish My research and when applying for jobs ...
Does the topic of my research play a vital role?
If my research is related to plants..does this affect my chances???
I would like to know DOES THE RESEARCH TOPIC PLAY AN IMPORTANT ROLE ALLTHROUGH IN FUTURE ?????

pLEASE Can any one help?

What country is Reputed University in? It's a new one to me.

And what is SELF INTRST, I looked it up in a dictionary but there was no entry.

Glad to the know that Reputed University clearly has such high entry standard.

Reputed mean very famous. My university is within top six rank in UK/EUROPE.
And the second word mean self intrest.....

Atleast now can u try???