Why Is Caenorhabditis Elegans an Appropriate Model Organism for Studying

question 7

Multiple Choice

Why is Caenorhabditis elegans an appropriate model organism for studying developmental processes?

• A) C. elegans does not undergo programmed cell death.
• B) C. elegans have meristems, regions that contain many stem cells.
• C) C. elegans is transparent and has only about 1000 cells, allowing the cells to be followed during development.
• D) C. elegans has millions of cells but can be easily mutated to have no gastrulation.
• E) C. elegans has genes that are completely unique from mice and humans.

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Definitions:

Rock Slide

A slab of relatively intact rock that detaches from bedrock and slides downhill, shattering as it moves.

Rotational Slide

A slide in which shearing takes place on a well-defined, curved shear surface, concave upward, producing a backward rotation in the displaced mass; synonymous with slump.

Debris Flow

A rapid movement of water-saturated rock, soil, and organic matter down slopes, capable of transporting large items due to its dense nature.

Cascade Mountains

A major mountain range extending from southern British Columbia through Washington and Oregon to Northern California, known for its scenic beauty and volcanic peaks.