Snakes,which Lack Limbs,evolved from Vertebrates That Had Legs

question 38

Multiple Choice

Snakes,which lack limbs,evolved from vertebrates that had legs.The limbs of snakes disappeared by _______ and the backbones of snakes are a _______.

• A) convergent evolution;synapomorphy
• B) an evolutionary reversal;synapomorphy
• C) convergent evolution;homoplastic trait
• D) an evolutionary reversal;homoplastic trait
• E) an evolutionary reversal;heteroplastic trait

---

Definitions:

Machine-Hours

A measure of production volume or activity based on the number of hours machines are operated.

Markup

The amount added to the cost of a product to cover overhead and profit, expressed as a percentage of the cost.

Manufacturing Overhead

All indirect costs associated with the manufacturing process, from maintenance to quality control.

Predetermined Overhead Rate

A rate used to apply manufacturing overhead costs to products, calculated before the fiscal period begins based on estimated costs and activity levels.