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:

Direct Materials

Materials that can be directly linked to the manufacturing of a particular product.

Manufacturing Overhead

Costs in manufacturing beyond direct labor and materials, including expenses like factory maintenance and equipment depreciation, essential for production but not directly traceable to specific units.

Indirect Materials

Materials used in the production process that are not directly traceable to a specific product.

T-Accounts

A bookkeeping tool that visually represents individual accounts as "T", showing debits on the left and credits on the right.