In tomatoes, two alleles of onegene determines whether the plant has purple (P) or green (G) stems, and a separate, independent gene determines whether the leaves a "cut" (C) or "potato" (Po). Five crosses of tomato plants (with the phenotypes show) give the following results:

Number of Progeny
Parental
Mating Phenotypes P, C P, Po G, C G, Po
1 P, C x G, C 321 101 310 107
2 P, C x P, Po 219 207 64 71
3 P, C x G, C 722 231 0 0
4 P, C x G, Po 404 0 87 0
5 P, Po x G, C 70 91 86 77

a. Determine which alleles are dominant.
What are the most probable genotypes for the paren'ts in each cross?

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

This is so important ugh its 25 points

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.