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Muscular Dystrophy Is a Group of Inherited Disorders That Lead

question 14

Multiple Choice

Muscular dystrophy is a group of inherited disorders that lead to increasing muscle cell loss and thus muscle weakness over time. There are many different types of muscular dystrophy. Symptoms can vary, although all involve muscle weakness. Duchenne muscular dystrophy (DMD) is a recessive X-linked form that leads to muscle degeneration and death usually by age 25. Symptoms begin before age 5 and include low endurance and difficulties standing. As the condition progresses, muscle tissue is replaced with adipose and other types of connective tissue. Abnormal bone development and some neurobehavioral and learning disabilities may also occur. DMD occurs as a result of a mutation in a single gene on the X chromosome. This gene codes for a particular protein, dystrophin, which plays a major role in the structure of muscle cells. The protein formed by the mutated gene is nonfunctional, and the absence of a functional protein eventually leads to cell death. The introduction mentions three out of four major tissue types found in animals. The tissue that is not mentioned is __________ tissue.

Definitions:

Significant Influence

The power to participate in the financial and operating policy decisions of an investee, without having control over those policies.

Fair Value

The price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

Jointly Controlled Operation

A joint operation where the parties that have joint control of the operation have rights to the assets, and obligations for the liabilities, relating to the arrangement.

Cash Position

A company's total cash and liquid assets minus its liabilities.