Use This Information Below to Answer the Following Questions

question 64

Multiple Choice

Use this information below to answer the following questions.
A large population of laboratory animals has been allowed to breed randomly for a number of generations. After several generations, 25% of the animals display a recessive trait (aa) , the same percentage as at the beginning of the breeding program. The rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from the homozygous dominants.
-What is the most reasonable conclusion that can be drawn from the fact that the frequency of the recessive trait (aa) has not changed over time?

• A)The population is undergoing genetic drift.
• B)The two phenotypes are about equally adaptive under laboratory conditions.
• C)The genotype AA is lethal.
• D)There has been a high rate of mutation of allele A to allele a.
• E)There has been sexual selection favouring allele a.

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Definitions:

Sampling Attributes

The characteristics or features of items in a sample that are measured or identified during quality control processes.

Statistical Process Control

is a method used in manufacturing and business processes to monitor, control, and ensure the quality of processes through statistical analysis.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the values deviate from the mean of the set.

Statistical Control

The use of statistical methods to monitor and control a process or production method to maintain its quality and efficiency.