Fundamentals of Biochemistry: Life at the Molecular Level 5th Edition

Published by Wiley
ISBN 10: 1118918401
ISBN 13: 978-1-11891-840-1

Chapter 24 - Nucleic Acid Structure - Exercises - Page 876: 25


(a) The contour length is $$17 \mathrm{\ mm} .$$ --- (b) The length of the DNA is therefore $$2 \mathrm{\ mm}$$

Work Step by Step

(a) The contour length is $5 \times 10^{7}$ bp $\times 3.4 \hat{\mathrm{A}} / \mathrm{bp}=1.7 \times 10^{8} \mathrm{A}=17 \mathrm{\ mm} .$ --- (b) The length of the DNA is therefore $(80 \stackrel{\circ}{\mathrm{A}} / 200 \text { bp }) \times\left(5 \times 10^{7} \text { bp }\right)=2 \times 10^{7} \stackrel{\circ}{\mathrm{A}}=2 \mathrm{\ mm}$
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