An Experiment Found That Newborn Rats Who Were Genetically Predisposed

question 416

Multiple Choice

An experiment found that newborn rats who were genetically predisposed to be skittish, nervous, and high-strung would develop into calm, exploratory, and stress-resistant adult rats when raised by genetically unrelated, attentive mothers. The researchers concluded that:

• A) although the rats' DNA did not change, the chemicals that controlled their gene expression did change.
• B) the genes controlling the rats' behavior must have mutated.
• C) although the rats' DNA changed, the chemicals that controlled their gene expression did not.
• D) the epigenetic changes were inherited from the previous generation of temperamental rats and were only expressed when the environment was favorable.

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Definitions:

Class 43

Class 43 is a category used in certain tax systems for specific types of assets that qualify for accelerated depreciation, often related to clean energy or energy-efficient equipment.

CCA Rate

The rate of capital cost allowance, which is the amount of depreciation that can be claimed for tax purposes in Canada.

WACC

The method known as Weighted Average Cost of Capital assesses a firm's cost of capital, with a proportional weighting applied to each segment of capital.

Net Investment Cost

The total cost associated with making an investment after subtracting any incentives or credits.