Question

Submitted Date:- Tuesday, Aug 03

#1. A bacteriophage has A-form DNA. A deletion mutant has a length of 10.4 μm instead of 15 μm. How many base pairs are missing from this mutant?

#2. The base sequence of one of the strands of a 20-bp duplex DNA is 5'-TCCGTTCGACGGTACATC-3' write the base sequence of its complementary strand.

Answer 1

Base pairs $μm=\frac{15}{10.4}=1.442 μm$

Adenine always pairs with thymine and cytosine always pairs with guanine. Thus, sequence of bases on complementary strand would be TACGTACGT.