What is an observation?

What is an observation?

• A. A predicted genetic value
• B. A future expectation
• C. A measurement of environment only
• D. A record of information, such as the weight of an animal (a phenotype)

Answer: (D)

An observation is the actual data you collect about a trait—the recorded measurement or value you observe. It represents a phenotype in real data form. For example, weighing an animal and recording its weight gives a concrete observation. That’s why this option fits best: it’s a recorded piece of information you observe. A predicted genetic value is an estimate of what the genotype would contribute, not a direct measurement. A future expectation isn’t data yet. Measuring environment only ignores the trait you’re observing, since observations capture the observable trait itself (though the environment can influence it).

An observation is the actual data you collect about a trait—the recorded measurement or value you observe. It represents a phenotype in real data form. For example, weighing an animal and recording its weight gives a concrete observation. That’s why this option fits best: it’s a recorded piece of information you observe. A predicted genetic value is an estimate of what the genotype would contribute, not a direct measurement. A future expectation isn’t data yet. Measuring environment only ignores the trait you’re observing, since observations capture the observable trait itself (though the environment can influence it).