Whether the DNA-like molecules in the question statementin the question statement have been derived from a hypothetical extraterrestrial organism from a hypothetical extraterrestrial organism that uses principles of genetic inheritance similar to those used by organisms on Earth. Concept introduction: Deoxyribonucleicacid (DNA) is a thread-like chain of nucleotides carrying genetic information required for the growth and development of many living creatures. There are many other forms of nucleic acids that are seen, like ribonucleic acid (RNA). But the stability and structural complexity of DNA reveal the fact; it is the only genetic material with all essential properties. DNA might be evolved through many different stages in its history to achieve its functional as well as structural complexity.

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Chapter 5, Problem 7Q

A.

Summary Introduction

To explain: Whether the DNA-like molecules in the question statementin the question statement have been derived from a hypothetical extraterrestrial organism from a hypothetical extraterrestrial organism that uses principles of genetic inheritance similar to those used by organisms on Earth.

Concept introduction: Deoxyribonucleicacid (DNA) is a thread-like chain of nucleotides carrying genetic information required for the growth and development of many living creatures. There are many other forms of nucleic acids that are seen, like ribonucleic acid (RNA). But the stability and structural complexity of DNA reveal the fact; it is the only genetic material with all essential properties. DNA might be evolved through many different stages in its history to achieve its functional as well as structural complexity.

B.

Summary Introduction

To explain: Based on the potential for hydrogenbonding, whether any of the extraterrestrial bases replace A, T, G, or C in terrestrial DNA.

Concept introduction: Deoxyribonucleicacid (DNA) is a thread-like chain of nucleotides carrying genetic information required for the growth and development of many living creatures. There are many other forms of nucleic acids that are seen, like ribonucleic acid (RNA). But the stability and structural complexity of DNA reveal the fact; it is the only genetic material with all essential properties. DNA might be evolved through many different stages in its history to achieve its functional as well as structural complexity.

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