The Herbicide Atrazine Is a Known Endocrine Disruptor to the Development

question 27

Multiple Choice

The herbicide atrazine is a known endocrine disruptor to the development stages of several animal species, including fish, reptiles, and amphibians. Scientists interested in studying long-term effects of exposure to atrazine on mating behaviors compared an all-male population of sexually mature African clawed frogs (Xenopus laevis) exposed to atrazine (Atz) to a sexually mature population of African clawed frogs not exposed to atrazine (Con) . Amplexus is defined as the mating position of frogs.

-When considered together, Parts A and C demonstrate

• A) that all frogs in the experiments were male.
• B) a possible explanation for the effect of atrazine.
• C) that testosterone levels are lower in nontreated frogs.
• D) a lack of relationship between successful mating and testosterone levels.

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Definitions:

Target Capital Structure

The optimal mix of debt, equity, and other financing sources a firm aims to achieve to minimize its cost of capital.

Dividend Payout Ratio

A financial ratio indicating the percentage of a company's earnings paid to shareholders in dividends.

Capital Budgeting

The process businesses use to evaluate and select major capital investments, based on their potential to generate additional profits or cash flow.

Clientele Effect

The theory suggesting that the types of dividends a company pays can attract different types of investors.