Sometimes Homologous Chromosomes Fail to Separate Normally During Meiosis I

question 185

Multiple Choice

Sometimes homologous chromosomes fail to separate normally during meiosis I, a process called:

• A)nondisjunction.
• B)chromosome separation.
• C)nontransferrance.
• D)unijunction.
• E)conjugation.

Describe the basis of inborn errors of metabolism and their genetic and biochemical causes.

Recognize the genetic makeup of retroviruses and their mechanism of action.

Understand the logic and methodology behind using model organisms in genetic studies.

Comprehend the central dogma of molecular biology and exceptions to it.

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Definitions:

Carbon Cycle

The series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, decay of organisms, and the burning of fossil fuels.

Trophic Levels

The levels in an ecosystem, representing a step in the food chain or food web, characterized by organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.

Natural Food Chains

A sequence of organisms each dependent on the next as a source of food, demonstrating the flow of energy and nutrients in an ecosystem.

Conversion Efficiency

A measure of how effectively a system converts input energy into output energy or work.