A Nematode Has a Gene That Is Not Found in Any

question 137

Multiple Choice

A nematode has a gene that is not found in any closely related species.A similar gene, however, is found in a variety of insects.What is the most likely explanation for this observation?

• A) The gene evolved via a gene duplication in nematodes.
• B) The nematode acquired the gene through lateral transfer.
• C) Insects and the nematode have a recent common ancestor.
• D) The gene is a pseudogene in the nematode.
• E) The gene evolved via concerted evolution in both nematodes and insects.

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Definitions:

Stability

The state or quality of being resistant to change, disruption, or displacement, often used in various scientific disciplines such as chemistry, physics, and engineering to describe systems or structures.

Fractures

Breaks or cracks within rock or Earth's surface caused by physical stress and strain.

Rock

A naturally occurring solid aggregate of minerals or mineraloids.

Tectonics

The branch of geology concerned with the structure and movement of the Earth's crust and large-scale processes affecting its layout.