Question

Match the column:

Column I		Column II
A.	$\phi\times $ 174 DNA	(i)	3.3 $\times $ 109 bp
B.	$\lambda $ - phage DNA	(ii)	4.6 $\times $ l06 bp
C.	E. coli DNA	(iii)	48502 bp
D.	Haploid content of human DNA	(iv)	5386 bases

• A. A = (iv), B = (iii), C = (ii), D = (i)
• B. A = (i), B = (ii), C = (iii), D = (iv)
• C. A = (ii), B = (iii), C = (iv), D = (i)
• D. A = (i), B = (iv), C = (ii), D = (iii)

Answer 1

Answer: (A)

The length of DNA in organism is measured in terms of the number of base pairs or the number of nucleotides. Each organism has a fixed quantity of DNA, ϕ×174 has single-stranded DNA thus its length is measured in the number of bases present and for other organisms having double-stranded DNA, the length is measured in the number of base pairs.