One gram of cultured human cells contains about 109 cells and occupies roughly 1 mL. If the average molecular mass of a base pair is 660 daltons and each cell contains 6.4 x 109 bp, what mass of DNA is present in this one-gram sample? If all the DNA molecules in the sample were laid end to end to form a single thread, would it be long enough to reach from the Earth to the Moon (385,000 kilometers)?

Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter9: Gene Expression And Gene Regulation
Section: Chapter Questions
Problem 14QP: How many kilobases of the DNA strand below will code for the protein product?
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One gram of cultured human cells contains about 109 cells and occupies
roughly 1 mL. If the average molecular mass of a base pair is 660 daltons and
each cell contains 6.4 x 109 bp, what mass of DNA is present in this one-gram
sample? If all the DNA molecules in the sample were laid end to end to form
a single thread, would it be long enough to reach from the Earth to the Moon
(385,000 kilometers)?
Transcribed Image Text:One gram of cultured human cells contains about 109 cells and occupies roughly 1 mL. If the average molecular mass of a base pair is 660 daltons and each cell contains 6.4 x 109 bp, what mass of DNA is present in this one-gram sample? If all the DNA molecules in the sample were laid end to end to form a single thread, would it be long enough to reach from the Earth to the Moon (385,000 kilometers)?
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