). The human genome is composed of the four DNA nucleotides: A, T, G, and C. Some regionsof the human genome are extremely G-C rich (i.e., a high proportion of the DNAnucleotides there are guanine and cytosine). Other regions are relatively A-T rich (i.e., ahigh proportion of the DNA nucleotides there are adenine and thymine). Imagine that youwant to compare nucleotide sequences from two regions of the genome. Sixty percent of thenucleotides in the first region are G-C (30% each of guanine and cytosine) and 40% are A-T(20% each of adenine and thymine). The second region has 25% of each of the fournucleotides.a. If you choose a single nucleotide at random from each of the two regions, what is theprobability that they are the same nucleotide?b. Assume that nucleotides over a single strand of DNA occur independently within regionsand that you randomly sample a three-nucleotide sequence from each of the two regions.What is the chance that these two triplets are the same?

Answered: Image /qna-images/answer/9c6e2dd4-a260-413a-b52e-7a2b32d9ced8.jpg

he human genome are extremely G- leotides there are guanine and cyto h proportion of the DNA nucleotide nt to compare nucleotide sequences cleotides in the first region are G-C % each of adenine and thymine). T cleotides. you choose a single nucleotide at r ty that they are the same nu

he human genome are extremely G- leotides there are guanine and cyto h proportion of the DNA nucleotide nt to compare nucleotide sequences cleotides in the first region are G-C % each of adenine and thymine). T cleotides. you choose a single nucleotide at r ty that they are the same nu

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter2: Systems Of Linear Equations

Section2.4: Applications

Problem 28EQ

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Question

). The human genome is composed of the four DNA nucleotides: A, T, G, and C. Some regions
of the human genome are extremely G-C rich (i.e., a high proportion of the DNA
nucleotides there are guanine and cytosine). Other regions are relatively A-T rich (i.e., a
high proportion of the DNA nucleotides there are adenine and thymine). Imagine that you
want to compare nucleotide sequences from two regions of the genome. Sixty percent of the
nucleotides in the first region are G-C (30% each of guanine and cytosine) and 40% are A-T
(20% each of adenine and thymine). The second region has 25% of each of the four
nucleotides.
a. If you choose a single nucleotide at random from each of the two regions, what is the
probability that they are the same nucleotide?
b. Assume that nucleotides over a single strand of DNA occur independently within regions
and that you randomly sample a three-nucleotide sequence from each of the two regions.
What is the chance that these two triplets are the same?

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