The reproductive cycle of a retrovirus, such as human immunodeficiency virus (HIV). Introduction: Retroviruses are the type of viruses that have ribonucleic acid (RNA) as the genetic material, which is produced by reverse transcription by an enzyme called deoxyribonucleic acid (DNA) polymerase, also known as reverse transcriptase. During this process, the RNA is transcribed into a DNA intermediate. Human immunodeficiency virus is a retrovirus that causes acquired immune deficiency syndrome (AIDS).

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6. The mammalian phylogenies (labeled a and b) were produced by two different research groups. a. In which tree do phylogenetic relationships most closely align with biogeography and why? (consult the Teeling and Hedges paper) b. What are the most closely related species to Chiroptera in each tree? Might the use of convergent traits for building phylogenies explain this difference? If so, which tree is most likely to have relied on convergent traits and why? c. What are some possible reasons that the two research groups came up with different phylogenies (in general terms)? describe at least three possible reasons.

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Chapter 24.4, Problem 7LO

Summary Introduction

To describe: The reproductive cycle of a retrovirus, such as human immunodeficiency virus (HIV).

Introduction: Retroviruses are the type of viruses that have ribonucleic acid (RNA) as the genetic material, which is produced by reverse transcription by an enzyme called deoxyribonucleic acid (DNA) polymerase, also known as reverse transcriptase. During this process, the RNA is transcribed into a DNA intermediate. Human immunodeficiency virus is a retrovirus that causes acquired immune deficiency syndrome (AIDS).

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