Multiple Choice
Which of the following is not an evolutionary mechanism responsible for organismal diversity?
1. Overview of Cell Biology
Evolution of the Cell
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Which of the following terms describes two genes that diverged in two or more species?
A
Homolog
B
Ortholog
C
Paralog
D
Metalog
Verified step by step guidance1
Understand the concept of homologous genes: Homologous genes are genes that are related by descent from a common ancestral DNA sequence. They can be found in different species or within the same species.
Differentiate between orthologs and paralogs: Orthologs are genes in different species that evolved from a common ancestral gene by speciation. Paralogs are genes related by duplication within a genome.
Identify the context of the problem: The problem asks for the term that describes genes that diverged in two or more species, which implies a speciation event.
Apply the definition of orthologs: Since orthologs are genes in different species that have diverged following a speciation event, they fit the description given in the problem.
Conclude that the correct term is 'Ortholog', as it specifically refers to genes that have diverged in different species due to speciation.
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