Which Model Organisms Provided Valuable Data in Early Studies of Chromosomal

question 46

Multiple Choice

Which model organisms provided valuable data in early studies of chromosomal inheritance? (Select all correct choices)

• A)humans
• B)sea urchins
• C)laboratory mice
• D)roundworms such as Ascaris

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Definitions:

Cerebrospinal Fluid (CSF)

The fluid in the subarachnoid space of the meninges and the central canal of the spinal cord.

CNS

Central Nervous System; it comprises the brain and spinal cord, controlling most functions of the body and mind.

Cerebrospinal Fluid (CSF)

A clear, colorless body fluid found in the brain and spinal cord, playing a key role in cushioning the brain and removing waste.

Nasal Conchae

Structures that extend from the lateral walls of the nasal cavity.