Evolution Has Provided Enormous Diversity in the Number of Vertebrae

question 16

Multiple Choice

Evolution has provided enormous diversity in the number of vertebrae among vertebrate species. Vertebrae are differentiated during embryonic development by

• A)hormone induction.
• B)the length of the backbone.
• C)the degree of structural support needed.
• D)the pattern of homeotic gene expression.

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Definitions:

Excess Demand

A situation in a market where the quantity demanded of a product exceeds the quantity supplied at a given price, leading to upward pressure on prices.

Sunglasses

Sunglasses are eyewear designed to protect the eyes from the harmful rays of the sun and reduce glare, while often serving as a fashion accessory.

Supply

The total amount of a good or service that is available to consumers.

Unregulated

A situation or industry not governed or controlled by laws, allowing free operation without governmental oversight.