Final answer:
To analyze a straightness control for features of varying sizes, select suitable measuring tools like a surveyor's wheel for the length of a street, a ruler for small worms, and GPS for distances between towns. For household measurements such as a light switch height or a fridge width, a tape measure is appropriate. In genetics, observed phenotype ratios from plant generations are reduced and compared to expected Mendelian ratios for consistency.
Step-by-step explanation:
Rules to Analyze a Straightness Control
When analyzing a straightness control for a feature of size such as the length of a street, the size of a small worm, or the distance from one town to the next, it's crucial to apply consistent measurement techniques. For these three features of differing size scales, the appropriate tools would vary:
For the length of a street, a surveyor's wheel could be used, providing measurements in both metric (meters or kilometers) and customary units (feet or miles).
The size of a small worm can be measured using a ruler or calipers, typically in centimeters or inches.
To measure the distance from one town to the next, electronic measuring tools like a GPS device may be used, with units in kilometers or miles.
Additionally, for something like the height of a light switch or the width of a refrigerator, a tape measure would be the suitable tool, able to measure in inches or centimeters, depending on the precision required.
Analyzing the data for Mendelian genetics, as seen in the observed phenotypes of 2706 tall/inflated, 930 tall/constricted, 888 dwarf/inflated, and 300 dwarf/constricted plants, involves reducing the numbers to a ratio. The observed ratios should then be compared to the expected Mendelian ratios to determine consistency. For example, if we are considering a dihybrid cross, the expected Mendelian ratio for F₂ generation phenotypes would be 9:3:3:1.