A Meter Stick Is Supported by a Knife-Edge at the 50-Cm

question 30

Multiple Choice

A meter stick is supported by a knife-edge at the 50-cm mark.Doug hangs masses of 0.40 and 0.60 kg from the 20-cm and 80-cm marks,respectively.Where should Doug hang a third mass of 0.30 kg to keep the stick balanced?

• A)20 cm
• B)70 cm
• C)30 cm
• D)25 cm

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Definitions:

Hardy-Weinberg Principle

A foundational principle in population genetics stating that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of evolutionary influences.

Genetic Drift

A mechanism of evolution in which allele frequencies of a population change over generations due to chance or random events.

Small Populations

Populations with a small number of individuals, which may face increased risks of extinction due to genetic drift, inbreeding, and reduced genetic diversity.

Genetic Isolation

A situation where different populations of a species are unable to interbreed, often leading to the formation of new species.