The Question Refers to the Table, Which Compares the Percent

question 31

Multiple Choice

The question refers to the table, which compares the percent sequence homology of four different parts of a gene (two introns and two exons) that is found in five different eukaryotic species. The data show the percentage of sequence homology of each intron and exon in comparison to the sequences in species A.
Percentage of Sequence Homology

Which of these four gene parts should allow the construction of the most accurate phylogenetic tree, assuming that this is the only part of the gene that has acted as a reliable molecular clock?

• A) Intron I
• B) Exon I
• C) Intron VI
• D) Exon V

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Definitions:

Marker Events

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Stagnation

A state of being static or having ceased to grow or develop, often used in psychological contexts to describe a lack of progression in personal development.

Erik Erikson

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Middle-Aged Adults

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