Which of the Following Statements About the Rainey and Travisano

question 129

Multiple Choice

Which of the following statements about the Rainey and Travisano experiments on Pseudomonas bacteria is true?

• A) The static cultures had a constantly uniform ­environment.
• B) No phenotypic evolution occurred in the static cultures.
• C) Molecular evidence showed that the same phenotype could arise from many genotypes.
• D) Both a and b
• E) None of the above

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Definitions:

Bones

Hard, dense connective tissue that forms the structural elements of the skeleton in vertebrates, providing support and protection.

Motor Neuron

Neuron that controls a muscle or gland.

Muscle Unit

Refers to a motor unit, the smallest functional element of a muscle, consisting of a motor neuron and the skeletal muscle fibers it innervates.

Sarcomere Contraction

The process of muscle fibers shortening, caused by the sliding of actin and myosin filaments within the sarcomere, the fundamental unit of muscle contraction.