"a biology student decides to copy mendel’s experiment with pea plants. unfortunately, some of the pea plants from the p generation, the "true-breeding" plants, get mixed in with some of the f1 generation plants. the student attempts to sort out the plants by crossing two purple-flowered plants that are believed to be heterozygous f1 plants. the results of this cross produce 100 offspring of which 72 have purple flowers and 28 have white flowers. which of the following statements are true? "

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.