Help with Genome Evolution

Practice Questions

GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Help with Genome Evolution

Questions
7
1

What are pseudogenes?

2

Why are rRNA genes and internal transcribed spacers (ITS) frequently used for organismal identification and evolutionary comparisons between organisms?

3

Genome projects on Drosophila and Anopheles have identified approximately 6,000 1:1 orthologs ranging from 100% to 20% identity. Why were no orthologs at a lower identity identified?

4

What is orthology in the context of genome comparisons?

5

What is the physiological purpose of a tandem gene array?

6

Organisms with extremely large genomes tend to have high amounts of what?

7

Why are rRNA genes more useful in molecular typing than other genes?

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