Transgenic Animals Made by Pronuclear Injection Can Be Limited for Studies

question 21

Multiple Choice

Transgenic animals made by pronuclear injection can be limited for studies of the links between genes and disease because

• A)the transgene allele must be dominant to the normal, endogenous allele and some diseases are caused by recessive mutations.
• B)the transgene allele must be recessive to the normal, endogenous allele and some diseases are caused by dominant mutations.
• C)all diseases are caused by mutations in multiple genes.
• D)diseases are not caused by specific alleles of a gene, but by posttranslational modifications of proteins.

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Definitions:

Antidepressant Drugs

Medications used to treat depression and other conditions by altering chemical levels in the brain to improve mood and emotions.

Psychotherapy

A therapeutic treatment involving psychological methods, particularly when based on regular personal interaction with adults, to treat behavioral and mental disorders.

Blood Pressure

The pressure of circulating blood on the walls of blood vessels, typically measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls.

Systolic

Relating to the phase of the heartbeat when the heart muscle contracts and pumps blood into the arteries.