There are no colleges which are affiliated to Delhi University and which offer bachelor degree in biotechnology. However you can go for other colleges and University in the Delhi city along with the total fees:

• Jamia Millia Islamia university INR 24000
• Amity University INR 25000 to 6.8 lakh
• All India Institute of Medical Sciences Delhi INR 2650
• DELHI TECHNOLOGICAL UNIVERSITY INR 65000

You can check for more by clicking the link below

https://www.google.com/url?sa=t&source=web&rct=j&url=https://university.careers360.com/colleges/list-of-biotechnology-universities-in-india&ved=2ahUKEwjQ4b6jjovyAhVF63MBHdzDBcMQFjAAegQIBxAC&usg=AOvVaw3L_KxLGMTaBBpt1Y-j9nPb