The White Leghorn Hen Is Prolific at Egg Laying, but Not

question 33

Multiple Choice

The white leghorn hen is prolific at egg laying, but not good for meat production and now produces almost all of the eggs in the U.S. This points to a global trend where

• A)genetic variety is being expanded through genetic engineering.
• B)a single variety of farm animal cannot face extinction through a disease outbreak.
• C)animals bred for maximum production are not performing as anticipated.
• D)farmers are being subsidized not to keep white leghorn hens.
• E)the eggs and sperm of domesticated animal varieties are being banked for preservation.

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Definitions:

External Acoustic Meatus

The canal leading from the outer ear to the eardrum, facilitating the conduction of sound waves.

Bony Labyrinth

The rigid, bone-encased passageways in the inner ear that are filled with fluid and contain structures essential for hearing and balance.

Tympanic Cavity

The air-filled space in the middle ear that contains the auditory ossicles, crucial for the transmission of sound vibrations.

Middle Ear

The air-filled space located between the eardrum and inner ear containing three small bones that transmit sound vibrations.