What Evidence Do Scientists Need to Show That Observed Changes

question 7

Multiple Choice

What evidence do scientists need to show that observed changes are actually due to natural selection?

• A) experimental manipulation of a population
• B) statistical significance
• C) notes and observations
• D) detailed drawings of changes over time

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Definitions:

Actin Myofilament

Actin myofilaments are the thin filaments in muscle cells that, along with myosin, play a crucial role in muscle contraction.

Myosin Myofilament

A type of protein filament in muscle cells responsible for the contractile properties of muscles.

Testicular Atrophy

The shrinkage of the testicles, which can result from conditions affecting hormone levels, blood supply, or direct injury to the testes, leading to reduced fertility or hormonal imbalances.

Anabolic Steroids

Anabolic steroids are synthetic variations of testosterone used to increase muscle mass and strength, but with significant potential side effects.