Suppose a Population of Worms Is Variable at a Genetic

question 54

Multiple Choice

Suppose a population of worms is variable at a genetic locus involved in foraging behavior. There are just two alleles at this locus, F and f. Individuals that are FF or Ff are rovers and will travel widely in pursuit of food. Individuals that are ff are sitters and will not travel as far. The frequency of the F allele is 0.75. The frequency of the f allele is _______ and, assuming the Hardy-Weinberg equation, the percentage of the population that are sitters is therefore _______.

• A) 0.125; 50%
• B) 0.25; 6%
• C) 0.57; 33%
• D) 0.75; 50%

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Definitions:

Sleep Duration

The amount of time spent in various stages of sleep during a typical sleep cycle, including both REM and non-REM sleep.

N2 Sleep

A stage of sleep characterized by sleep spindles and K-complexes, marking a deeper sleep than N1 and preceding the deeper states of N3 and REM sleep.

REM Sleep

A unique phase of sleep in mammals and birds, characterized by rapid movement of the eyes, low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.

Sleep Spindles

Bursts of oscillatory brain activity visible on an EEG that occur during stage 2 of NREM sleep, believed to play a role in learning and memory consolidation.