The Role of Fossil Records and DNA Sequencing in Studying Evolution

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

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

What is the genetic material found in viruses protected by?

Capsid and an outermost layer called the envelope

What is one of the unique features of viruses?

They cannot replicate outside a host organism or on their own

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

The history of viral evolution through the ages

What molecule are viruses unable to synthesize?


How do viruses insert their genetic material into host cells?

By degrading their capsid and releasing DNA/RNA

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


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

Endogenous Virus Elements (EVEs)

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

Clues to our past

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

Identify when viral infections occurred

Explore the significance of fossil records, DNA sequencing, and phylogenetic trees in understanding the biological past and evolutionary relationships. Gain insights into how these tools have revolutionized our understanding of the complex evolutionary processes.

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