Biology
Biology
10th Edition
ISBN: 9780321794260
Author: Audesirk, Teresa/ Audesirk
Publisher: Pearson College Div
Question
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Chapter 11, Problem 1FIB
Summary Introduction

Introduction:

Deoxyribonucleic acid (DNA) is a genetic material which is responsible for passing information from one generation to other. It is a double helical structure that consists of two parallel strands made up of nucleotides.

Expert Solution & Answer
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Answer to Problem 1FIB

Correct answer:

DNA consists of subunits called nucleotide. Each subunit consists of three parts sugar, phosphate, and a nitrogenous base.

Explanation of Solution

The nucleotides are the main components of nucleic acid DNA. A nucleotide is composed of three units: a nitrogenous base, five carbon deoxyribose sugar, and a phosphate group. The two strands of helical DNA are anti-parallel to each other with nitrogenous bases stacked between the two strands giving it ladder-like appearance.

Conclusion

Nucleotides which consists of sugar, base, and phosphate group are the subunits of DNA.

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Imagine that you are a clinical geneticist. Your colleague is an oncologist who wants your help explaining the basics of genetics to their patient, who will be undergoing genetic testing in the coming weeks for possible acute myeloid leukemia (AML) induced by the radiation she had several years ago for breast cancer. Write a 1,050- to 1,225-word memo to your colleague. Include the following in your memo: An explanation of the molecular structure of DNA and RNA, highlighting both similarities and differences  A description of the processes of transcription and translation An explanation of the differences between leading and lagging strands and how the DNA is replicated in each strand Reponses to the following common questions patients might ask about this type of genetic testing and genetic disorder: Does AML run in families? What genes are tested for?
Respond to the following in a minimum of 175 words: What are some potential consequences that could result if the processes of replication, transcription, and translation don’t function correctly? Provide an example of how you might explain these consequences in terms that patients might understand.
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