The Question Refers to the Following Table, Which Compares the Percent

question 18

Multiple Choice

The question refers to the following table, which compares the percent sequence homology of four different parts (two introns and two exons) of a gene that is found in five different eukaryotic species. Each part is numbered to indicate its distance from the promoter (for example, Intron I is the one closest to the promoter) . The data reported for species A were obtained by comparing DNA from one member of species A to another member of species A.
% 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:

Pleasure Principle

A concept in psychoanalytic theory suggesting that people seek pleasure and avoid pain, guiding the id's desire to satisfy basic urges, needs, and desires.

Reality Principle

A psychoanalytic concept where the ego negotiates between the desires of the id and the super-ego, often requiring a compromise to deal with the demands of reality.

Personality

The combination of characteristics or qualities that form an individual's distinctive character.

Enduring

Enduring refers to lasting over a long period of time, demonstrating persistence or resilience in the face of challenges.