Caenorhabditis elegans: Free-living Nematode Species
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Questions and Answers

What is the type species of the genus Caenorhabditis?

Caenorhabditis elegans

Who proposed research into C. elegans, primarily in the area of neuronal development?

Sydney Brenner

What was C. elegans the first multicellular organism to have sequenced?

its whole genome

In what year was C. elegans the first organism to have its connectome (neuronal 'wiring diagram') completed?

<p>2019</p> Signup and view all the answers

What is the length of the free-living species of nematode C. elegans?

<p>about 1 mm</p> Signup and view all the answers

What are the specialized structures that males of C. elegans have for mating?

<p>spicules</p> Signup and view all the answers

What are the basic components of the C. elegans anatomy?

<p>mouth, pharynx, intestine, gonad, and collagenous cuticle</p> Signup and view all the answers

How does the wave of contractions in C. elegans affect its movement?

<p>propelled backwards or forwards</p> Signup and view all the answers

Where are neutral lipids stored in C. elegans?

<p>intestine, epidermis, and embryos</p> Signup and view all the answers

What is the main function of the pharynx in C. elegans?

<p>muscular food pump, grinds food, transports it directly to the intestine</p> Signup and view all the answers

How are the contents of the intestine released in C. elegans?

<p>via the rectum</p> Signup and view all the answers

What are the reproductive structures present in male C. elegans?

<p>single-lobed gonad, vas deferens, tail specialized for mating</p> Signup and view all the answers

What are the reproductive structures present in hermaphrodite C. elegans?

<p>two ovaries, oviducts, spermatheca, single uterus</p> Signup and view all the answers

How many neurons are present in C. elegans?

<p>302 neurons</p> Signup and view all the answers

What are the functions of neurons in C. elegans?

<p>receive neurotransmitters, synaptic connection between neurons</p> Signup and view all the answers

What are the motor excitatory and inhibitory neurons in C. elegans known as?

<p>cholinergic and gabaergic neurons</p> Signup and view all the answers

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