Either Give an Example or Prove That There Are None

question 22

Essay

either give an example or prove that there are none.
-A simple digraph with indegrees 0, 1, 2 and outdegrees 0, 1, 2.

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Definitions:

Speciation

Speciation is the evolutionary process by which new species arise. Speciation causes one evolutionary lineage to split into two or more lineages (cladogenesis).

Joshua Trees

A type of yucca plant native to the southwestern United States, characterized by its unique, spiky appearance and adapted to desert climates.

Endogenous Retroviruses

Viral sequences that have integrated into the genome of a host organism and can be inherited across generations.

Reverse Transcriptase

An enzyme used by certain viruses to transcribe their RNA into DNA, enabling them to integrate into the host genome.