Biology 1st Paper MCQ-Sylhet Board-2022

1. Which enzyme helps the strands of DNA to be seperated?

2. In the process of Q part stated above

i. produce genetic variation

ii. crossing over occur

iii. there is exchange in sister chromatid Which one is correct

3. How many genes are present in the DNA of T₁ virus?

4. Interferon excreted from-

5. Which one does not indicate the termination codon?