The Sumatran Elephant Is a Critically Endangered Species

question 10

Multiple Choice

The Sumatran elephant is a critically endangered species.You are part of a research group that is going to sequence its genome in the hope that you can learn more about the species before it disappears.After analyzing its genome, you find a sizable percentage of the DNA is noncoding and not eukaryotic in origin.What is the most likely explanation?

• A) The elephant genome is vastly different from other eukaryotic species, a possible reason it has become endangered.
• B) The sequences of these elephants are remnants of ancestral retroviral infections.
• C) The individual elephant sequenced had recently consumed a large quantity of vegetation, causing plant sequences to be detected in the genome data.
• D) The sequences of these elephants are a product of lateral gene transfer.
• E) There was contamination in your sequencing samples.

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