The minimum length of a DNA sequence that will appear only once in the human genome needs to be determined, if the human genome contains 3 billion nucleotides arranged in a vast array of the sequence. This is to be taken into account that only one strand and all four nucleotides have the same probability of appearance. Concept introduction: Deoxyribonucleic acid (DNA) is a molecule consisting of two strands that twist around each other to create a double strand DNA containing directions for the development, working, growth and breeding of all recognized species and many bacteria. It is also recognized as polynucleotides. The two DNA sections consist of simpler monomeric blocks called nucleotides.

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Chapter 4, Problem 9P

Interpretation Introduction

Interpretation:

The minimum length of a DNA sequence that will appear only once in the human genome needs to be determined, if the human genome contains 3 billion nucleotides arranged in a vast array of the sequence. This is to be taken into account that only one strand and all four nucleotides have the same probability of appearance.

Concept introduction:

Deoxyribonucleic acid (DNA) is a molecule consisting of two strands that twist around each other to create a double strand DNA containing directions for the development, working, growth and breeding of all recognized species and many bacteria. It is also recognized as polynucleotides. The two DNA sections consist of simpler monomeric blocks called nucleotides.

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For some DNAs, it is possible to separate the two strands, after denaturation,in a CsCl gradient.(a) What property of any DNA determines where it will band in a CsClgradient?(b) What kind of DNA might have two strands that differ sufficiently in thisproperty that they could be separated after denaturation?