When using heritability, which statement about the cost of measurement is correct?

When using heritability, which statement about the cost of measurement is correct?

• A. No, cost doesn't matter
• B. Only for large populations
• C. Only when heritability is high
• D. Yes, cost of measurement is a consideration

Answer: (D)

Estimating heritability relies on precise phenotypic measurements, and the cost of those measurements affects both how many data you can collect and how reliable those data are. If measurement is expensive, you may measure fewer individuals or use simpler, less accurate methods. That introduces more measurement error into the phenotypic variance, which inflates the environmental component and can bias the heritability estimate downward or make it less precise. On the other hand, cheaper or higher-throughput measurements allow larger samples and more replicates, improving the accuracy of the heritability estimate. So, the cost of measurement is indeed a consideration in planning and interpreting heritability studies.

Estimating heritability relies on precise phenotypic measurements, and the cost of those measurements affects both how many data you can collect and how reliable those data are. If measurement is expensive, you may measure fewer individuals or use simpler, less accurate methods. That introduces more measurement error into the phenotypic variance, which inflates the environmental component and can bias the heritability estimate downward or make it less precise. On the other hand, cheaper or higher-throughput measurements allow larger samples and more replicates, improving the accuracy of the heritability estimate. So, the cost of measurement is indeed a consideration in planning and interpreting heritability studies.