Researchers Combined Two Yeast Strains of Opposite Mating Type; the a Strain

question 28

Multiple Choice

Researchers combined two yeast strains of opposite mating type; the a strain was resistant to chloramphenicol and the ? strain was sensitive to chloramphenicol. The diploid progeny were allowed to undergo several cell divisions, and then the cells were replica plated on glycerol medium with and without chloramphenicol.
-What results would you expect if mitochondria are inherited uniparentally from the a strain?

• A)Some, but not all, yeast colonies found on the plate without chloramphenicol will also grow on the plate with chloramphenicol.
• B)All of the yeast colonies on the plate without chloramphenicol will also grow on the plate with chloramphenicol.
• C)Many yeast colonies will grow on the plate without chloramphenicol and no colonies will grow on the plate with chloramphenicol.
• D)No colonies will grow on either plate.

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Definitions:

Stage 4 Sleep

Stage 4 sleep, now classified within N3 sleep in the modern sleep staging systems, is characterized by deep, restorative sleep and the presence of delta waves in brain activity.

Non-REM Sleep

A type of sleep that is divided into three stages, characterized by slow brain waves and reduced metabolic activity, distinct from REM (Rapid Eye Movement) sleep.

Sleepwalking

A disorder that causes people to get up and walk around while in a state of sleep.

Night Terrors

A sleep disorder causing feelings of terror or dread, and typically occurs during the first hours of stage 3-4 non-REM sleep; differs from nightmares.