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Gene sequences that remain very similar over many species are said to be


A) the same.
B) noncoding regions.
C) highly conserved.
D) of the same family.
E) resistant to mutation.

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What is the most probable explanation for the presence of pseudogenes in a genome such as our own?


A) They are genes that had a function at one time, but that have lost their function because they have been translocated to a new location.
B) They are genes that have accumulated mutations to such a degree that they would code for different functional products if activated.
C) They are duplicates or near duplicates of functional genes but cannot function because they would provide inappropriate dosage of protein products.
D) They are genes with significant inverted sequences.
E) They are genes that have acquired mutations and are not expressed, even though they have nearly identical sequences to expressed genes.

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Why is it more difficult to identify eukaryotic genes than prokaryotic genes?


A) because in eukaryotes the proteins are larger than in prokaryotes
B) because in eukaryotes the coding portions of genes are shorter than in prokaryotes
C) because in eukaryotes there are no start codons
D) because in eukaryotes there are introns
E) because in eukaryotes there are more short tandem repeats

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Which of the following techniques would be most appropriate to test the hypothesis that humans and chimps differ in the expression of a large set of shared genes?


A) DNA microarray analysis
B) polymerase chain reaction (PCR)
C) DNA sequencing
D) protein-protein interaction assays
E) bioinformatics

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