Barbara McClintock Discovered Mobile Elements in Corn by Analyzing the Genetic

question 24

Multiple Choice

Barbara McClintock discovered mobile elements in corn by analyzing the genetic behavior of two elements,Ds and Ac.The interplay between these two elements has become one of the most interesting stories of discovery in the field of genetics.How do Ds and Ac interact?

• A) Ds causes a deletion next to the insertion site of Ac.
• B) Ac causes a deletion next to the insertion site of Ds.
• C) While Ds moves only if Ac is present in the genome, Ac is capable of autonomous movement.
• D) The movement of Ac is dependent on two forms of Ds.
• E) Both elements can move only within chromosome 9.

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Definitions:

Marginal Product

The additional output produced as a result of increasing one more unit of a single input, holding all other inputs constant.

Capital

Assets or resources that are used in the production of goods and services, including physical assets like machinery and buildings, as well as financial resources.

Marginal Revenue Product

The extra revenue generated by employing an additional unit of a factor, such as labor or capital.

Perfect Competitor

A theoretical market structure where numerous small firms sell identical products, and no single seller can influence the market price.