Ok so I have this assignment due TOMORROW. ik i should've asked last week but all I need to know is, am I right? If not, plz tell me some tips to change it. I already did the punnett square but I just want to know if the answers I gave to the questions were correct :)

first cross: (first box) RR, (second box) Rr, (third box) RR, (fourth box) Rr

second cross: (first box) Rr, (second box) Rr, (third box) Rr, (fourth box) Rr

third cross: (first box) rr, (second box) rr, (third box) rr, (fourth box) rr

(this is a double check)

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.