Hey there,

Hope you are doing great.

As you are willing to join Delhi University. I am listing out the courses offered by Delhi University for Undergraduate degree. It consists of Arts,Commerce and science stream. Let me go with science stream as you belong to it :

• B.Sc (Hons) Home science
• B.Tech food Technology
• B.Sc (Hons)  Food Technology
• B.Tech Polymer science
• B.Sc (Hons)  Biomedical science
• B.Sc (Hons) Bio chemistry
• B.Sc (Hons) Microbiology
• B.Sc (Hons) Anthropology
• B.tech Instrumentation
• B.Sc (Hons) Instrumentation
• B.Sc (Hons) Geology
• B.Sc (Hons) Applied Science
• B.Sc (Hons) Electronics
• B.Sc (Hons) Biological science
• B.Sc (Hons) computer science
• B.tech computer science
• B.Sc (Hons) Maths
• B.Sc (Hons) Chemistry
• B.Sc (Hons) Botany
• B.Sc (Hons) Zoology.

In these, You can go for B.Sc Biological Science or choose any other stream related to your subjects in 12th.

Refer this link if required :

https://www.careers360.com/university/university-of-delhi-delhi

Hope this helps..