In Neurospora,a,b,and C Are Auxotrophic Mutants (Require Particular Compounds for Growth).The

question 40

Multiple Choice

In Neurospora,a,b,and c are auxotrophic mutants (require particular compounds for growth) .The mating a b⁺ *a⁺b gives 5% prototrophs (grown on unsupplemented medium) .The mating b⁺c * b c⁺ gives 2.5% prototrophs,and the mating a⁺c * a c⁺ gives 2.5% prototrophs.Assuming complete interference prevails in the chromosome segment in question,what percent of prototrophs would you expect in the mating a⁺b c⁺ * a b⁺c? (The order of mutations is not necessarily a,b,c: It can be determined on the basis of the two-point crosses above.)

• A)0%
• B)0.0625%
• C)0.125%
• D)2.5%
• E)5%

---

Definitions:

Major Depressive Disorder

A clinical condition characterized by persistent sadness, lack of interest in activities, and other symptoms that impair daily functioning.

Drug Therapy

The treatment of disease or symptoms by administering pharmaceutical drugs.

Electroconvulsive Therapy

A psychiatric treatment in which seizures are electrically induced in patients to provide relief from mental disorders, primarily severe depression.

Personal Control

Our sense of controlling our environment rather than feeling helpless.