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The Role of Fossil Records and DNA Sequencing in Studying Evolution

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The Role of Fossil Records and DNA Sequencing in Studying Evolution

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Questions and Answers

What is a phylogenetic tree used for in the study of organisms?

To study the behavior of organisms in their natural habitats

To analyze the geological history of organisms

To observe the physical characteristics of organisms

To define the evolutionary relationships in the line of descent from a common ancestor (correct)

What is the genetic material found in viruses protected by?

Capsid and an outermost layer called the envelope (correct)

Nucleus and a lipid bilayer

Endoplasmic reticulum and a carbohydrate shell

Membrane and a protein shell

What is one of the unique features of viruses?

They have the ability to carry out photosynthesis

They possess a fully functional set of organelles

They are capable of independent movement

They cannot replicate outside a host organism or on their own (correct)

What is the 'Viral Fossil Record' used to infer and trace back?

The history of viral evolution through the ages Signup and view all the answers

What molecule are viruses unable to synthesize?

ATP Signup and view all the answers

How do viruses insert their genetic material into host cells?

By degrading their capsid and releasing DNA/RNA Signup and view all the answers

What percentage of the human genome is estimated to comprise retroviral DNA segments?

8% Signup and view all the answers

What are the viral genetic fragments passed down from parent to progeny and integrated via reproductive cells called?

Endogenous Virus Elements (EVEs) Signup and view all the answers

What does the 'fossil record' of viral evolution extracted from modern DNA provide?

Clues to our past Signup and view all the answers

How can studying the prior selection of advantageous antiviral genes in modern genomes help?

Identify when viral infections occurred Signup and view all the answers