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Exam 10: Genome Evolution

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Question 31

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Transposons

A) are genetic elements that move within and between genomes.
B) all use a DNA intermediate while making duplicates.
C) are composed of RNA.
D) represent a small fraction of the genomes of multicellular eukaryotes.

E) B) and D)
F) B) and C)

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Question 32

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What does the figure convey about genome size in prokaryotes?

A) The number of protein-coding genes decreases with genome size.
B) There is strong evidence of G-value paradox in prokaryotes.
C) Bacteria have larger genomes than Archaeans.
D) Free-living bacteria generally have larger genomes than do obligate symbionts.

E) A) and D)
F) A) and C)

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Question 33

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Which of the following is NOT a type of horizontal gene transfer?

What was the first multicellular organism to have its entire genome sequenced?

In the syntenic dot plot of E. coli K-12 strains A and B, there are two circled dots in the lower-right corner of the plot. How do you interpret the position of these two dots in terms of the gene orders of the two strains?

Describe the field of evolutionary genomics.

A group of scientists sequence and identify various regions of an organism's genome and find that 92% of the genome (a circular chromosome and a plasmid) is comprised of protein-coding genes. The organism is most likely a

Which of the following statements regarding mutational bias and its influence on GC content is true?

While sequencing a bacterial genome, a researcher notes that G is more common on the leading strand than the lagging strand. This is an example of what phenomenon? Explain.